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006-002 Certified MySQL 5.0 DBA Part II

Study Guide Prepared by Killexams.com mySQL Dumps Experts


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006-002 exam Dumps Source : Certified MySQL 5.0 DBA Part II

Test Code : 006-002
Test Name : Certified MySQL 5.0 DBA Part II
Vendor Name : mySQL
: 140 Real Questions

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mySQL mySQL Certified MySQL 5.0

access MySQL Database With php | killexams.com Real Questions and Pass4sure dumps

In-Depth

access MySQL Database With personal home page

Use the personal home page extension for MySQL to entry information from the MySQL database.

  • by Deepak Vohra
  • 06/20/2007
  • The MySQL database is probably the most known open source relational database. It helps different facts kinds in these categories: numeric, date and time, and string. The numeric information forms encompass BIT, TINYINT, BOOL, BOOLEAN, INT, INTEGER, BIGINT, DOUBLE, flow and DECIMAL. The date and time records kinds consist of DATE, DATETIME, TIMESTAMP and year. The string records kinds include CHAR, VARCHAR, BINARY, ASCII, UNICODE, textual content and BLOB. listed here, you are going to find out how you could access these facts forms with Hypertext Preprocessor scripting language — taking advantage of Hypertext Preprocessor 5's extension for the MySQL database.

    installation MySQL DatabaseTo set up the MySQL database, you must first down load the neighborhood version of MySQL 5.0 database for home windows. There are three versions: windows necessities (x86), windows (x86) ZIP/Setup.EXE and with out installer (unzip in C:\). To deploy the with out installer edition, unzip the zip file to a directory. in case you've downloaded the zip file, extract it to a directory. And, if you've downloaded the home windows (x86) ZIP/Setup.EXE edition, extract the zip file to a directory. (See supplies.)

    subsequent, double-click on on the Setup.exe software. you'll set off the MySQL Server 5.0 Setup wizard. within the wizard, choose the Setup classification (the default environment is commonplace), and click on install to install MySQL 5.0.

    in the sign-Up frame, create a MySQL account, or opt for pass sign-Up. select "Configure the MySQL Server now" and click on conclude. you're going to spark off the MySQL Server illustration Configuration wizard. Set the configuration class to specific Configuration (the default environment).

    if you're no longer prevalent with MySQL database, choose the default settings in the subsequent frames. by using default, server type is set at Developer computer and database utilization is determined at Multifunctional Database. opt for the pressure and listing for the InnoDB tablespace. in the concurrent connections frame, select the DDSS/OLAP environment. subsequent, opt for the permit TCP/IP Networking and allow Strict Mode settings and use the 3306 port. opt for the usual character Set environment and the installation As home windows service environment with MySQL as the provider identify.

    in the security alternate options body, that you could specify a password for the basis user (through default, the basis consumer doesn't require a password). subsequent, uncheck modify protection Settings and click on on Execute to configure a MySQL Server instance. finally, click on conclude.

    if you've downloaded the home windows Installer kit software, double-click on the mysql-essential-5.0.x-win32.exe file. you're going to activate the MySQL Server Startup wizard. comply with the equal method as Setup.exe.

    After you've gotten comprehensive setting up the MySQL database, log into the database with the MySQL command. In a command on the spot window, specify this command:

    >mysql -u root

    The default person root will log in. A password is not required for the default person root:

    >mysql -u <username> -p <password>

    The MySQL command will display:

    mysql>

    To list the database cases in the MySQL database, specify this command:

    mysql>display databases

    via default, the look at various database might be listed. to make use of this database, specify this command:

    mysql>use look at various

    set up MySQL Hypertext Preprocessor ExtensionThe php extension for MySQL database is packaged with the Hypertext Preprocessor 5 down load (see components). First, you deserve to activate the MySQL extension in the personal home page.ini configuration file. eradicate the ';' before this code line in the file:

    extension=php_mysql.dll

    next, restart the Apache2 web server.

    Hypertext Preprocessor additionally requires entry to the MySQL client library. The libmysql.dll file is included with the personal home page 5 distribution. Add libmysql.dll to the windows system path variable. The libmysql.dll file will seem in the C:/php directory, which you introduced to the system route for those who installed Hypertext Preprocessor 5.

    The MySQL extension provides a considerable number of configuration directives for connecting with the database. The default connection parameters establish a reference to the MySQL database if a connection is not specified in a function that requires a connection resource and if a connection has no longer already been opened with the database.

    The Hypertext Preprocessor classification library for MySQL has a number of functions to join with the database, create database tables and retrieve database information.

    Create a MySQL Database TableNow it be time to create a desk within the MySQL database using the personal home page type library. Create a php script named createMySQLTable.Hypertext Preprocessor within the C:/Apache2/Apache2/htdocs directory. within the script, specify variables for username and password, and connect with the database the use of the mysql_connect() feature. The username root doesn't require a password. next, specify the server parameter of the mysql_connect() formulation as localhost:3306:

    $username='root'; $password=''; $connection = mysql_connect ('localhost:3306', $username, $password);

    If a connection is not based, output this error message using the mysql_error() feature:

    if (!$connection) $e = mysql_error($connection); echo "Error in connecting to MySQL Database.".$e;

    you are going to deserve to choose the database by which a desk might be created. opt for the MySQL verify database illustration using the mysql_select_db() function:

    $selectdb=mysql_select_db('verify');

    next, specify a SQL observation to create a database table:

    $sql="CREATE desk Catalog (CatalogId VARCHAR(25) primary KEY, Journal VARCHAR(25), writer Varchar(25),edition VARCHAR(25), Title Varchar(75), author Varchar(25))";

    Run the SQL remark using the mysql_query() function. The connection useful resource that you simply created previous may be used to run the SQL statement:

    $createtable=mysql_query ($sql, $connection );

    If a table isn't created, output this error message:

    if (!$createtable) $e = mysql_error($connection); echo "Error in developing desk.".$e;

    subsequent, add information to the Catalog desk. Create a SQL remark so as to add information to the database:

    $sql = "INSERT INTO Catalog VALUES('catalog1', 'Oracle magazine', 'Oracle Publishing', 'July-August 2005', 'Tuning Undo Tablespace', 'Kimberly Floss')";

    Run the SQL statement the usage of the mysql_query() characteristic:

    $addrow=mysql_query ($sql, $connection );

    in a similar fashion, add an extra desk row. Use the createMySQLTable.php script shown in listing 1. Run this script in Apache net server with this URL: http://localhost/createMySQLTable.personal home page. A MySQL desk will reveal (figure 1).

    Retrieve facts From MySQL DatabaseYou can retrieve records from the MySQL database using the Hypertext Preprocessor classification library for MySQL. Create the retrieveMySQLData.php script in the C:/Apache2/Apache2/htdocs directory. in the script, create a reference to the MySQL database using the mysql_connect() characteristic:

    $username='root'; $password=''; $connection = mysql_connect ('localhost:3306', $username, $password);

    choose the database from which records may be retrieved with the mysql_select_db() components:

    $selectdb=mysql_select_db('check');

    next, specify the select statement to query the database (The Hypertext Preprocessor class library for MySQL does not have the supply to bind variables as the Hypertext Preprocessor classification library for Oracle does.):

    $sql = "select * from CATALOG";

    Run the SQL query the usage of the mysql_query() feature:

    $influence=mysql_query($sql , $connection);

    If the SQL question doesn't run, output this error message:

    if (!$effect) $e = mysql_error($connection); echo "Error in running SQL observation.".$e;

    Use the mysql_num_rows() function to obtain the variety of rows within the result useful resource:

    $nrows=mysql_num_rows($effect);

    If the variety of rows is better than 0, create an HTML table to screen the outcomes information. Iterate over the outcomes set the usage of the mysql_fetch_array() method to acquire a row of facts. To achieve an associative array for every row, set the result_type parameter to MYSQL_ASSOC:

    while ($row = mysql_fetch_array ($outcome, MYSQL_ASSOC))

    Output the row information to an HTML desk using associative dereferencing. for instance, the Journal column price is got with $row['Journal']. The retrieveMySQLData.Hypertext Preprocessor script retrieves statistics from the MySQL database (checklist 2).

    Run the personal home page script in Apache2 server with this URL: http://localhost/retrieveMySQLData.Hypertext Preprocessor. HTML facts will seem with data acquired from the MySQL database (figure 2).

    Now you know how to use the personal home page extension for MySQL to access facts from the MySQL database. that you can also use the php data Objects (PDO) extension and the MySQL PDO driver to entry MySQL with php .

    concerning the AuthorDeepak Vohra is a web developer, a solar-licensed Java programmer and a sun-licensed internet component developer. that you can attain him at dvohra09@yahoo.com.

    in regards to the author

    Deepak Vohra, a solar-certified Java programmer and sun-certified web element developer, has published a large number of articles in business publications and journals. Deepak is the creator of the e-book "Ruby on Rails for php and Java developers."


    MySQL Certification FAQ | killexams.com Real Questions and Pass4sure dumps

    Q: Why should I get certified on the convention?A: by means of taking your examination at the conference, you now not only store some huge cash, which you can additionally attend certification primer tutorials on the first day of the convention. Attend the academic and go to the examination whereas all of the details are clean to your intellect.accurate

    Q: Will the DBA certification primer tutorial absolutely prepare me for taking the certification assessments?A: The tutorials are “primers” and in the time offered, the speaker can't cowl each aspect you deserve to know before taking the assessments. they are youngsters a superb refresher and tackle one of the key areas vital for the exam. MySQL also offers practising lessons if you want to put together you for all of the checks (see mysql.com/training). For self-look at for the Developer and DBA checks, you should buy the MySQL 5.0 Certifcation look at e-book (ISBN 0-672-32812-7). And the MySQl 5.1 Cluster DBA Certification analyze book is advised for Cluster DBA candidates.precise

    Q: What does it can charge to take an exam at the conference?A: assessments on the conference can charge $25 (general price is $200.) You keep $a hundred seventy five per exam.right

    Q: can i pay for the certification tests earlier than the conference?A: No. Registration and charge for certification checks can be available most effective onsite in the course of the trying out software.appropriate

    Q: How do I pay for the certification assessments at the conference?A: You may also buy exams onsite. simplest bank card funds could be approved. Onsite revenue are area to availability, and will close if the trying out room can't accommodate greater exam-takers.properly

    Q: What do all those acronyms in the old answer refer to?A: CMDEV is the abbreviation of certified MySQL Developer; CMDBA for certified MySQL Database Administrator and CMCDBA for licensed MySQL Cluster Database Administrator.right

    Q: what is the structure of the certification assessments delivered right through the conference?A: bring a desktop as the tests will all be given over the cyber web. There should be 24 challenging wired ports attainable on a first-come-first-server basis and others will must count on the convention WiFi.excellent

    Q: where am i able to get greater tips on the MySQL Certification application, exam contents and the like?A: The certification pages on mysql.com/certification comprise the assistance you need. make sure you make certain to familiarize yourself with the contents of the Candidate e-book that you're going to locate there.right

    hyperlink | 12/18/2009 four:31pm UTC

    MySQL version names | killexams.com Real Questions and Pass4sure dumps

    considering that MySQL 4.0, the free (in the sense of GPL) and industrial models have different names. right here they're:

    callLicense functionalityMySQL typical neighborhood version GPL All default functions that can be considered solid (together with InnoDB) MySQL Max group version GPL identical as MySQL standard, however with further services and table drivers that have not reached full maturityMySQL traditional commercialLike MySQL normal, however with out InnoDB MySQL seasoned commercialLike MySQL ordinary, but with InnoDB (for that reason with transactions) MySQL seasoned certified Server advertisementLike MySQL professional, however usable best within the context of the certified Server application MySQL network and optimized for optimum stability and safety

    For usual GPL functions, using the normal edition is counseled. The additional capabilities in the Max edition are for use only in special purposes. presently (version 5.0), the usual and Max models range within the guide of BDB tables and the SSL encryption of customer/server connections. These functions should be integrated into the ordinary and business models simplest when they're regarded sufficiently reliable. you could determine which features the operating version of MySQL helps with the SQL command demonstrate VARIABLES. In here code you could see the outcomes of MySQL commonplace 5.0.2.

    mysql> display VARIABLES LIKE 'have%'; Variable_name price have_archive NO have_bdb NO have_compress surehave_crypt yeshave_csv NO have_example_engine NO have_geometry definitehave_innodb definitehave_isam NO have_ndbcluster NO have_openssl NO have_query_cache yeshave_raid NO have_rtree_keys convincedhave_symlink yes

    in the case of industrial applications, the resolution between basic and seasoned relies upon readily on whether InnoDB is needed. (The license for the professional version is more costly.) The classic and seasoned models can not be simply downloaded at www.mysql.com, however are offered simplest after a license has been issued.

    MySQL pro licensed Server has been available handiest due to the fact the starting of 2005, as part of the program MySQL network. MySQL guarantees clients of this software above all sturdy and comfortable versions. in case you are looking to recognize which server version is being run, then execute here SQL command:

    mysql> exhibit VARIABLES LIKE 'version'; Variable_name Value__________ . version 5.0.2-alpha-ordinary

    This output indicates that the ordinary version 5.0.2 is working. There is not any further Max functionality and no license for industrial use.

    observe: don't confuse MySQL Max with MaxDB. The latter is the former SAP-DB database device that due to the fact that 2004 has been maintained and sold with the aid of the MySQL firm. There are certainly similarities between the database methods MySQL and MaxDB, but there are considerable differences. This book is strictly about MySQL, not MaxDB.

    aid Contracts

    even with whether you are the use of a industrial or GPL version of MySQL, you may take out a guide contract with MySQL. You thereby simultaneously assist the additional construction of MySQL.

    Tip: particulars on business MySQL licenses and paid support can be discovered at https://www.mysql.com/help/. links to quite a few agencies that present industrial MySQL assist can be discovered at http://options.mysql.com.

    The above tip is excerpted from from Chapter 1, "what's MySQL?" of The Definitive e book to MySQL 5 by using Michael Kofler, courtesy of Apress. find it valuable? buy the book here.

    about the writer: Michael Kofler holds a Ph.D. in laptop science from Graz Technical school. He has written a few a success computer books on issues such as visible fundamental, visual simple .internet, and Linux. Michael is the author of The Definitive e book to MySQL 5, Third edition and Definitive ebook to Excel VBA, second version from Apress.


    006-002 Certified MySQL 5.0 DBA Part II

    Study Guide Prepared by Killexams.com mySQL Dumps Experts


    Killexams.com 006-002 Dumps and Real Questions

    100% Real Questions - Exam Pass Guarantee with High Marks - Just Memorize the Answers



    006-002 exam Dumps Source : Certified MySQL 5.0 DBA Part II

    Test Code : 006-002
    Test Name : Certified MySQL 5.0 DBA Part II
    Vendor Name : mySQL
    : 140 Real Questions

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    Certified MySQL 5.0 DBA Part II

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    Indian Bank Recruitment 2018: Apply online for 145 Specialist Officer posts | killexams.com real questions and Pass4sure dumps

    NEW DELHI: The Indian Bank, a leading Public Sector Bank, has invited applications for the Specialist Officer SO Posts of Assistant General Manager, Assistant Manager, Manager, Senior Manager, & Other Posts.

    The eligible candidates can apply online through its official website indianbank.in from April 10, 2018 to May 2, 2018.

    Direct link to apply online: http://www.indianbank.in/career.php

    NotificationEnglish: http://www.indianbank.in/pdfs/SOENG.pdf

    Hindi: http://www.indianbank.in/pdfs/SOHIN.pdf

    Official website: indianbank.in

    Important DatesStarting Date to Apply Online: April 10, 2018Closing Date to Apply Online: May 2, 2018Last date for submission of Application Fee: May 2, 2018

    Vacancy Details

    Positions in Information Technology Department / Digital Banking Department

    Post Code Post Role / Domain Scale Vacancy 1 Assistant General Manager System Administrator - AIX, HP-UX, Linux, Windows V 1 2 Chief Manager DBA - Oracle, MySQL, SQL-Server, DB2 IV 2 3 Manager DBA - Oracle, MySQL, SQL-Server, DB2 II 2 4 Chief Manager System Administrator - AIX, HP-UX, Linux, Windows IV 1 5 Manager System Administrator - AIX, HP-UX, Linux, Windows II 2 6 Senior Manager Middleware Administrator - Weblogic, Websphere,JBOSS, Tomcat, Apache, IIS. III 2 7 Chief Manager Application Architect IV 1 8 Manager Application Architect II 1 9 Chief Manager Big Data, Analytics, CRM IV 1 10 Senior Manager Big Data, Analytics, CRM III 1 11 Chief Manager IT Security Specialist IV 1 12 Manager IT Security Specialist II 2 13 Chief Manager Software Testing Specialist IV 1 14 Manager Software Testing Specialist II 2 15 Chief Manager Network Specialist IV 1 16 Senior Manager Network Specialist III 1 17 Manager Virtualisation specialist for VMware, Microsofthypervisor, RHEL(Red Hat Enterprise Linux) II 2 18 Senior Manager Project architect III 1 19 Senior Manager Data Centre Management III 1 20 Manager Network administrator II 2 21 Chief Manager Cyber security specialist IV 1 22 Senior Manager Cyber security specialist III 2 Total 31 Positions in Information Systems Security Cell Post Code Post Role / Domain Scale Vacancy 23 Senior Manager Senior Information Security Manager III 1 24 Manager Information Security Administrators II 3 25 Manager Cyber Forensic Analyst II 1 26 Manager Certified Ethical Hacker &Penetration Tester II 1 27 Assistant Manager Application Security Tester I 1 Total 7 Positions in Treasury Department Post Code Post Role / Domain Scale Vacancy 28 Senior Manager Regulatory Compliance III 1 29 Senior Manager Research Analyst III 1 30 Senior Manager Fixed Income Dealer III 2 31 Manager Equity Dealer II 1 32 Senior Manager Forex Derivative Dealer III 1 33 Senior Manager Forex Global Markets Dealer III 1 34 Manager Forex Dealer II 1 35 Senior Manager Relationship Manager - Trade Finance and Forex III 3 36 Senior Manager Business Research Analyst - Trade Finance and Forex III 1 37 Senior Manager Credit Analyst - Corporates III 1 Total 13 Position in Security Department Post Code Post Role / Domain Scale Vacancy 40 Manager Security Officer II 25 Positions in Credit Post Code Post Role / Domain Scale Vacancy 41 Senior Manager Credit III 20 42 Manager Credit II 30 Total 50 Positions in Planning and Development Department Post Code Post Role / Domain Scale Vacancy 43 Manager Statistician II 1 44 Assistant Manager Statistician I 1 Total 2 Positions in Premises and Expenditure Department Post Code Post Role / Domain Scale Vacancy 45 Manager Electrical II 2 46 Manager Civil II 2 47 Assistant Manager Civil I 6 48 Assistant Manager Architect I 1 Total 11 RESERVATION SCALE TOTAL SC ST OBC UR OC VI HI ID V 1 0 0 0 1 0 0 0 0 IV 9 2 0 2 5 0 0 0 0 III 42 6 3 11 22 1 0 1 0 II 84 12 6 22 44 0 1 1 1 I 9 1 0 2 6 1 0 0 0 PAY SCALE AND EMOLUMENTS Scale I 23700 980 30560 1145 32850 1310 42020 Scale II 31705 1145 32850 1310 45950 Scale III 42020 1310 48570 1460 51490 Scale IV 50030 1460 55870 1650 59170 Scale V 59170 1650 62470 1800 66070

    Age Limit (as on January 1, 2018)

    Post Age Limit Assistant General Manager 30 to 45 years Manager (All Other) 23 to 35 years Manager (Equity Dealer, Forex Dealer, Risk Management, Security Officer, Credit, Statistician) 25 to 35 years Senior Manager (All Other) 25 to 38 years Senior Manager (Regulatory Compliance, Research Analyst, Fixed Income Dealer, Forex Derivative Dealer, Forex Global Markets Dealer, Relationship Manager - Trade Finance and Forex, Business Research Analyst - Trade Finance and Forex,Risk Management) 27 to 38 years Chief Manager 27 to 40 years Assistant Manager 20 to 30 years

    Age Relaxation

    Category Age Relaxation SC/ ST 5 years OBC (Non-Creamy Layer) 3 years Ex-Servicemen 5 years Persons ordinarily domiciled in the state of Jammu & Kashmir during the period January 1, 1980 and December 31, 1989 5 years Persons affected by 1984 riots 5 years Qualification

    Educational Qualification (For Post Code 1, 2,3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 and 22):a) 4 year Engineering/ Technology Degree in Computer Science/ Computer Applications/ Information Technology/ Electronics/ Electronics & Telecommunications/ Electronics & Communication/ Electronics & InstrumentationORb) Post Graduate Degree in Electronics/ Electronics & Tele Communication/ Electronics & Communication/ Electronics & Instrumentation/ Computer Science/ Information Technology/ Computer ApplicationsORGraduate having passed DOEACC ‘B’ level

    Post Code Additional Qualification Experience 1 Professional level certification inSystem Administration 10 years Experience in maintenance and Administration of Operating Systems, Databases, Backup Management and Data Centre Management 2 Professional level certification in Database Administration 7 years Experience in maintenance and administration of databases likeOracle/ DB2/ MySql/ SQL Server 3 Associate level certification inDatabase Administration. 3 years Experience in maintenance and administration of databases likeOracle/ DB2/ MySql/ SQL Server. 4 Professional level certification in System Administration 7 years Experience in maintenance andAdministration of Operating Systems. 5 Associate level certification inSystem Administration 3 years Experience in maintenance and Administration of Operating Systems 6 Certification in Middleware Solution 5 years Experience in maintenance andAdministration of Middleware. 7 Certification in Software Development & Programming 7 years Experience in application design, code review and Documentation 8 Certification in Software Development& Programming 7 years Experience in application design, code review and Documentation 9 Certification in Big Data/Analytics/ CRM solution 7 years Experience in Analyzing data, uncover information, derive insights and implement data-driven strategies and datamodels in Big Data/ Analytic/ CRM technology 10 Certification in Big Data/Analytics/ CRM solution 3 years Experience in Analyzing data, uncover information, derive insights and implement data-driven strategies and data models in Big Data/Analytic/ CRM technology 11 Certified Information Security Manager/ Certified Information Systems Security Professional 7 years Experience in implementing security improvements by auditing and assessing the current situation; evaluating trends; anticipating requirements and making relevant configuration/strategychanges to keep the organization secure. 12 Checkpoint Certified SecurityExpert /CISCO Certified Security Professional. 3 years Experience in implementing security improvements by assessing the current situation; evaluating trends; anticipating requirements and makingchanges to keep the organization secure 13 Certification in software testing. Experience in Software Testing 14 Certification in software testing. Experience in Software Testing 15 Cisco Certified Internetwork Expert (Switching and Routing). 7 years Experience in Routing and switching. Design and implementation of WAN networks. Experience (a) in routing using Border Gateway Protocol(BGP). (b) Drawing up specifications for procurement of Network devices includingrouters, switches, firewalls 16 Cisco Certified InternetworkExpert (Switching and Routing). 5 years Experience in Routing and switching. Design and implementation of WAN networks. Experience in implementation of NetworkAdmission Control (NAC) 17 Associate level CertificationVirtualization Technology. 3 years Experience in Administrationof systems in Virtualized environment 18 Nil 5 years Experience in conceptualizing, esigning and implementation of High-valueorganization level IT projects 19 It is desirable to have certificationin Data Centre Management. 5 years Experience in Managing DataCentre Operations. 20 Cisco Certified NetworkProfessional (Routing and Switching) 3 years Experience in Network Troubleshooting,Network Protocols, Routers, Network Administration. 21 Certification in Cyber Security froma recognized institution 7 years Experience Managing Cyber SecurityOperation Centre. 22 Certification in Cyber Security froma recognized institution 5 years Experience Managing Cyber SecurityOperation Centre HOW TO APPLY ONLINE
  • Log on to the official website: indianbank.in/
  • Click on "Recruitment to the post"
  • Read the advertisement details very carefully to ensure your eligibility before "Online Application"
  • Click on "Online Application" to fill up the application form online
  • The candidate would be directed to a page where he/she has to click on "Apply Online" (for the first time registration or new registration)/ already registered candidate just need to "Sign In" by using their application number and password sent to their valid e-mail ID/Mobile No. (This is required always for logging in to their account for Form Submission and Admit Card/Call Letter Download)
  • Fill up the application form as per the guidelines and information sought
  • Candidates need to fill up to all required information in "First Screen" tab and click on "SUBMIT" to move next screen.
  • Fill the all details in the application & upload Photo, Signature.
  • Application fee should be paid through Online & then Submit the Form.
  • Take a print out of online application for future use.

  • MySQL version names | killexams.com real questions and Pass4sure dumps

    Since MySQL 4.0, the free (in the sense of GPL) and commercial versions have different names. Here they are:

    Name License Functionality MySQL Standard Community Edition GPL All default functions that can be considered stable (including InnoDB) MySQL Max Community Edition GPL Same as MySQL Standard, but with additional functions and table drivers that have not reached full maturity MySQL Classic commercial Like MySQL Standard, but without InnoDB MySQL Pro commercial Like MySQL Standard, but with InnoDB (thus with transactions) MySQL Pro Certified Server commercial Like MySQL Pro, but usable only in the context of the Certified Server program MySQL Network and optimized for maximum stability and security

    For ordinary GPL applications, the use of the Standard version is recommended. The additional functions in the Max version are for use only in special applications. Currently (version 5.0), the Standard and Max versions differ in the support of BDB tables and the SSL encryption of client/server connections. These functions will be incorporated into the Standard and commercial versions only when they are considered sufficiently stable. You can determine which functions the running version of MySQL supports with the SQL command SHOW VARIABLES. In the following code you can see the results of MySQL Standard 5.0.2.

    mysql> SHOW VARIABLES LIKE 'have%'; Variable_name Value have_archive NO have_bdb NO have_compress YES have_crypt YES have_csv NO have_example_engine NO have_geometry YES have_innodb YES have_isam NO have_ndbcluster NO have_openssl NO have_query_cache YES have_raid NO have_rtree_keys YES have_symlink YES

    In the case of commercial applications, the decision between Classic and Pro depends simply on whether InnoDB is needed. (The license for the Pro version is more expensive.) The Classic and Pro versions cannot be simply downloaded at www.mysql.com, but are provided only after a license has been issued.

    MySQL Pro Certified Server has been available only since the beginning of 2005, as part of the program MySQL Network. MySQL promises users of this program particularly stable and secure versions. If you wish to know which server version is being run, then execute the following SQL command:

    mysql> SHOW VARIABLES LIKE 'version'; Variable_name Value__________ . version 5.0.2-alpha-standard

    This output shows that the Standard version 5.0.2 is running. There is no additional Max functionality and no license for commercial use.

    Note: Do not confuse MySQL Max with MaxDB. The latter is the former SAP-DB database system that since 2004 has been maintained and sold by the MySQL firm. There are indeed similarities between the database systems MySQL and MaxDB, but there are considerable differences. This book is strictly about MySQL, not MaxDB.

    Support Contracts

    Regardless of whether you are using a commercial or GPL version of MySQL, you may take out a support contract with MySQL. You thereby simultaneously support the further development of MySQL.

    Tip: Details on commercial MySQL licenses and paid support can be found at https://www.mysql.com/support/. Links to various companies that offer commercial MySQL support can be found at http://solutions.mysql.com.

    The above tip is excerpted from from Chapter 1, "What is MySQL?" of The Definitive Guide to MySQL 5 by Michael Kofler, courtesy of Apress. Find it helpful? Purchase the book here.

    About the author: Michael Kofler holds a Ph.D. in computer science from Graz Technical University. He has written a number of successful computer books on topics such as Visual Basic, Visual Basic .NET, and Linux. Michael is the author of The Definitive Guide to MySQL 5, Third Edition and Definitive Guide to Excel VBA, Second Edition from Apress.


    Netflix Billing Migration to AWS — Part II | killexams.com real questions and Pass4sure dumps

    This is a continuation in the series on Netflix Billing migration to the Cloud. An overview of the migration project was published earlier here:

    This post details the technical journey for the Billing applications and datastores as they were moved from the Data Center to AWS Cloud.

    As you might have read in earlier Netflix Cloud Migration blogs, all of Netflix streaming infrastructure is now completely run in the Cloud. At the rate Netflix was growing, especially with the imminent Netflix Everywhere launch, they knew they had to move Billing to the Cloud sooner than later else their existing legacy systems would not be able to scale.

    There was no doubt that it would be a monumental task of moving highly sensitive applications and critical databases without disrupting the business, while at the same time continuing to build the new business functionality and features.

    A few key responsibilities and challenges for Billing:

  • The Billing team is responsible for the financially critical data in the company. The data they generate on a daily basis for subscription charges, gift cards, credits, chargebacks, etc. is rolled up to finance and is reported into the Netflix accounting. They have stringent SLAs on their daily processing to ensure that the revenue gets booked correctly for each day. They cannot tolerate delays in processing pipelines.
  • Billing has zero tolerance for data loss.
  • For most parts, the existing data was structured with a relational model and necessitates use of transactions to ensure an all-or-nothing behavior. In other words they need to be ACID for some operations. But they also had use-cases where they needed to be highly available across regions with minimal replication latencies.
  • Billing integrates with the DVD business of the company, which has a different architecture than the Streaming component, adding to the integration complexity.
  • The Billing team also provides data to support Netflix Customer Service agents to answer any member billing issues or questions. This necessitates providing Customer Support with a comprehensive view of the data.
  • The way the Billing systems were, when they started this project, is shown below.

  • 2 Oracle databases in the Data Center — One storing the customer subscription information and other storing the invoice/payment data.
  • Multiple REST-based applications — Serving calls from the www.netflix.com and Customer support applications. These were essentially doing the CRUD operations
  • 3 Batch applications — Subscription Renewal — A daily job that looks through the customer base to determine the customers to be billed that day and the amount to be billed by looking at their subscription plans, discounts, etc.Order & Payment Processor — A series of batch jobs that create an invoice to charge the customer to be renewed and process the invoice through various stages of the invoice lifecycle.Revenue Reporting — A daily job that looks through billing data and generates reports for the Netflix Finance team to consume.
  • One Billing Proxy application (in the Cloud) — used to route calls from rest of Netflix applications in the Cloud to the Data Center.
  • Weblogic queues with legacy formats being used for communications between processes.
  • The goal was to move all of this to the Cloud and not have any billing applications or databases in the Data Center. All this without disrupting the business operations. They had a long way to go!

    The Plan

    We came up with a 3-step plan to do it:

  • Act I — Launch new countries directly in the Cloud on the billing side while syncing the data back to the Data Center for legacy batch applications to continue to work.
  • Act II — Model the user-facing data, which could live with eventual consistency and does not need to be ACID, to persist to Cassandra (Cassandra gave us the ability to perform writes in one region and make it available in the other regions with very low latency. It also gives us high-availability across regions).
  • Act III — Finally move the SQL databases to the Cloud.
  • In each step and for each country migration, learn from it, iterate and improve on it to make it better.

    Act I — Redirect new countries to the Cloud and sync data to the Data Center

    Netflix was going to launch in 6 new countries soon. They decided to take it as a challenge to launch these countries partly in the Cloud on the billing side. What that meant was the user-facing data and applications would be in the Cloud, but they would still need to sync data back to the Data Center so some of their batch applications which would continue to run in the Data Center for the time-being, could work without disruption. The customer for these new countries data would be served out of the Cloud while the batch processing would still run out of the Data Center. That was the first step.

    We ported all the APIs from the 2 user-facing applications to a Cloud based application that they wrote using Spring Boot and Spring Integration. With Spring Boot, they were able to quickly jump-start building a new application, as it provided the infrastructure and plumbing they needed to stand it up out of the box and let us focus on the business logic. With Spring Integration they were able to write once and reuse a lot of the workflow style code. Also with headers and header-based routing support that it provided, they were able to implement a pub-sub model within the application to put a message in a channel and have all consumers consume it with independent tuning for each consumer. They were now able to handle the API calls for members in the 6 new countries in any AWS region with the data stored in Cassandra. This enabled Billing to be up for these countries even if an entire AWS region went down — the first time they were able to see the power of being on the Cloud!

    We deployed their application on EC2 instances in AWS in multiple regions. They added a redirection layer in their existing Cloud proxy application to switch billing calls for users in the new countries to go to the new billing APIs in the Cloud and billing calls for the users in the existing countries to continue to go to the old billing APIs in the Data Center. They opened direct connectivity from one of the AWS regions to the existing Oracle databases in the Data Center and wrote an application to sync the data from Cassandra via SQS in the 3 regions back to this region. They used SQS queues and Dead Letter Queues (DLQs) to move the data between regions and process failures.

    New country launches usually mean a bump in member base. They knew they had to move their Subscription Renewal application from the Data Center to the Cloud so that they don’t put the load on the Data Center one. So for these 6 new countries in the Cloud, they wrote a crawler that went through all the customers in Cassandra daily and came up with the members who were to be charged that day. This all row iterator approach would work for now for these countries, but they knew it wouldn’t hold ground when they migrated the other countries and especially the US data (which had majority of their members at that time) to the Cloud. But they went ahead with it for now to test the waters. This would be the only batch application that they would run from the Cloud in this stage.

    We had chosen Cassandra as their data store to be able to write from any region and due to the fast replication of the writes it provides across regions. They defined a data model where they used the customerId as the key for the row and created a set of composite Cassandra columns to enable the relational aspect of the data. The picture below depicts the relationship between these entities and how they represented them in a single column family in Cassandra. Designing them to be a part of a single column family helped us achieve transactional support for these related entities.

    We designed their application logic such that they read once at the beginning of any operation, updated objects in memory and persisted it to a single column family at the end of the operation. Reading from Cassandra or writing to it in the middle of the operation was deemed an anti-pattern. They wrote their own custom ORM using Astyanax (a Netflix grown and open-sourced Cassandra client) to be able to read/write the domain objects from/to Cassandra.

    We launched in the new countries in the Cloud with this approach and after a couple of initial minor issues and bug fixes, they stabilized on it. So far so good!

    The Billing system architecture at the end of Act I was as shown below:

    Act II — Move all applications and migrate existing countries to the cloud

    With Act I done successfully, they started focusing on moving the rest of the apps to the Cloud without moving the databases. Most of the business logic resides in the batch applications, which had matured over years and that meant digging into the code for every condition and spending time to rewrite it. They could not simply forklift these to the Cloud as is. They used this opportunity to remove dead code where they could, break out functional parts into their own smaller applications and restructure existing code to scale. These legacy applications were coded to read from config files on disk on startup and use other static resources like reading messages from Weblogic queues — all anti-patterns in the Cloud due to the ephemeral nature of the instances. So they had to re-implement those modules to make the applications Cloud-ready. They had to change some APIs to follow an async pattern to allow moving the messages through the queues to the region where they had now opened a secure connection to the Data Center.

    The Cloud Database Engineering (CDE) team setup a multi node Cassandra cluster for their data needs. They knew that the all row Cassandra iterator Renewal solution that they had implemented for renewing customers from earlier 6 countries would not scale once they moved the entire Netflix member billing data to Cassandra. So they designed a system to use Aegisthus to pull the data from Cassandra SSTables and convert it to JSON formatted rows that were staged out to S3 buckets. They then wrote Pig scripts to run mapreduce on the massive dataset everyday to fetch customer list to renew and charge for that day. They also wrote Sqoop jobs to pull data from Cassandra and Oracle and write to Hive in a queryable format which enabled us to join these two datasets in Hive for faster troubleshooting.

    To enable DVD servers to talk to us in the Cloud, they setup load balancer endpoints (with SSL client certification) for DVD to route calls to us through the Cloud proxy, which for now would pipe the call back to the Data Center, until they migrated US. Once US data migration was done, they would sever the Cloud to Data Center communication link.

    To validate this huge data migration, they wrote a comparator tool to compare and validate the data that was migrated to the Cloud, with the existing data in the Data Center. They ran the comparator in an iterative format, where they were able to identify any bugs in the migration, fix them, clear out the data and re-run. As the runs became clearer and devoid of issues, it increased their confidence in the data migration. They were excited to start with the migration of the countries. They chose a country with a small Netflix member base as the first country and migrated it to the Cloud with the following steps:

  • Disable the non-GET apis for the country under migration. (This would not impact members, but delay any updates to subscriptions in billing)
  • Use Sqoop jobs to get the data from Oracle to S3 and Hive.
  • Transform it to the Cassandra format using Pig.
  • Insert the records for all members for that country into Cassandra.
  • Enable the non-GET apis to now serve data from the Cloud for the country that was migrated.
  • After validating that everything looked good, they moved to the next country. They then ramped up to migrate set of similar countries together. The last country that they migrated was US, as it held most of their member base and also had the DVD subscriptions. With that, all of the customer-facing data for Netflix members was now being served through the Cloud. This was a big milestone for us!

    After Act II, they were looking like this:

    Act III — Good bye Data Center!

    Now the only (and most important) thing remaining in the Data Center was the Oracle database. The dataset that remained in Oracle was highly relational and they did not feel it to be a good idea to model it to a NoSQL-esque paradigm. It was not possible to structure this data as a single column family as they had done with the customer-facing subscription data. So they evaluated Oracle and Aurora RDS as possible options. Licensing costs for Oracle as a Cloud database and Aurora still being in Beta didn’t help make the case for either of them.

    While the Billing team was busy in the first two acts, their Cloud Database Engineering team was working on creating the infrastructure to migrate billing data to MySQL instances on EC2. By the time they started Act III, the database infrastructure pieces were ready, thanks to their help. They had to convert their batch application code base to be MySQL-compliant since some of the applications used plain jdbc without any ORM. They also got rid of a lot of the legacy pl-sql code and rewrote that logic in the application, stripping off dead code when possible.

    Our database architecture now consists of a MySQL master database deployed on EC2 instances in one of the AWS regions. They have a Disaster Recovery DB that gets replicated from the master and will be promoted to master if the master goes down. And they have slaves in the other AWS regions for read only access to applications.

    Our Billing Systems, now completely in the Cloud, look like this:

    Needless to say, they learned a lot from this huge project. They wrote a few tools along the way to help us debug/troubleshoot and improve developer productivity. They got rid of old and dead code, cleaned up some of the functionality and improved it wherever possible. They received support from many other engineering teams within Netflix. They had engineers from the Cloud Database Engineering, Subscriber and Account engineering, Payments engineering, Messaging engineering worked with us on this initiative for anywhere between 2 weeks to a couple of months. The great thing about the Netflix culture is that everyone has one goal in mind — to deliver a great experience for their members all over the world. If that means helping Billing solution move to the Cloud, then everyone is ready to do that irrespective of team boundaries!

    The road ahead…

    With Billing in the Cloud, Netflix streaming infrastructure now completely runs in the Cloud. They can scale any Netflix service on demand, do predictive scaling based on usage patterns, do single-click deployments using Spinnaker and have consistent deployment architectures between various Netflix applications. Billing infrastructure can now make use of all the Netflix platform libraries and frameworks for monitoring and tooling support in the Cloud. Today they support billing for over 81 million Netflix members in 190+ countries. They generate and churn through terabytes of data everyday to accomplish billing events. Their road ahead includes rearchitecting membership workflows for a global scale and business challenges. As part of their new architecture, they would be redefining their services to scale natively in the Cloud. With the global launch, they have an opportunity to learn and redefine Billing and Payment methods in newer markets and integrate with many global partners and local payment processors in the regions. They are looking forward to architect more functionality and scale out further.

    If you like to design and implement large-scale distributed systems for critical data and build automation/tooling for testing it, they have a couple of positions open and would love to talk to you! Check out the positions here :

    — by Subir Parulekar, Rahul Pilani

    See Also:


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    Calameo : http://en.calameo.com/account/book#
    Box.net : https://app.box.com/s/18kcwa8fqk9fhakvgozsih22ol3ii06r
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