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    Interview Questions for DB2 z/OS Application Developers
    Interview Questions for DB2 z/OS Application Developers
    Interview Questions for DB2 z/OS Application Developers
    Ebook62 pages38 minutes

    Interview Questions for DB2 z/OS Application Developers

    By Robert Wingate

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    About this ebook

    This book is targeted for job seeking individuals who aspire to ace the DB2 z/OS technical interview. It contains over 180 questions and answers dealing with DB2 z/OS including the latest DB2 version 11.  Freshen up and be prepared for your DB2 interview with DB2 for z/OS Interview Questions for Application Developers!   
     

    LanguageEnglish
    PublisherRobert Wingate
    Release dateMar 15, 2019
    ISBN9781386131823
    Interview Questions for DB2 z/OS Application Developers
    Author

    Robert Wingate

    Robert Wingate is a computer services professional with over 30 years of IBM mainframe and distributed programming experience. He holds several IBM certifications, including IBM Certified Application Developer - DB2 11 for z/OS, and IBM Certified Database Administrator for LUW. He lives in Fort Worth, Texas.  

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      Book preview

      Interview Questions for DB2 z/OS Application Developers - Robert Wingate

      Introduction

      Welcome

      Congratulations on your purchase of Interview Questions for DB2 z/OS Application Developers.  This book is meant to enhance your knowledge of DB2 for z/OS so that you can ace your DB2 technical interview. The questions and answers in the book offer you a significant advantage by helping you to test your readiness for the DB2 interview.   

      How to Use This Book

      I recommend that you use this book as part of a set of resources to assist you in preparing for your interview. Regardless of your experience level with DB2, the amount of detail in a technical interview can be overwhelming.  Most people will find a good study guide to be helpful.

      I suggest working with DB2 z/OS as much as possible.  Think up a project – create a database, some tables, indexes, and views. Add/change/delete data.  Create SQL to join tables, etc. Use the import/export/load utilities. The thing about actually doing things with DB2 is that you’ll tend to remember those things more than just reading about it.  Isn’t this true of most things? 

      Thanks for your purchase of this book.  If you feel that this Interview Questions resource helps you in preparing for your DB2 interview, please leave a positive book review at the place you bought it.  I’ll really appreciate that.  Thanks!

      It’s my sincere hope that this book will help you in your career with DB2. I especially hope you ace your DB2 for z/OS interview. Good luck!

      Robert Wingate

      IBM Certified Application Developer – DB2 11 for z/OS

      C:\Users\kz4hz\Documents\IBM Books\Interview Questions for DB2 11\Kobo\Interview Questions for DB2 zOS Application Developers KOBO_files\image001.jpg

      DB2 Questions and Answers

      1.   In DB2 11 you can improve performance for read-only queries against remote sites by binding with a new value for DBPROTOCOL.  What is the new value that can be used when binding applications?

      Binding a program  with the new DBPROTOCOL(DRDACBF) option results in package-based continuous block fetch.  Package-based continuous block fetch provides a performance advantage for an application that produces large read-only result sets for remote sites.  

      2.   DB2 11 introduced autonomous procedures.  Name some characteristics of these procedures. 

      Autonomous procedures run with their own units of work, separate from the calling program. 

      If a calling program issues a ROLLBACK to back out its changes, the committed changes of the autonomous procedure are not affected. 

      Only native SQL procedures can be defined as autonomous.

      Parallelism is disabled for autonomous procedures.

      An autonomous procedure cannot call another autonomous procedure.

      3.   Name some actions that could improve performance in a DB2 application?

      Parallel processing can significantly reduce response time by running parallel operations in a partitioned tablespace.

      The EXPLAIN function can be used to determine access paths that DB2 will use for an SQL statement, and thereby enable tuning for greater efficiency.

      Binding most applications with the ISOLATION(CS) and CURRENTDATA(NO) options will usually mean that DB2 can release locks early and thereby improve concurrency of data access.

      4.   Name one or two of the new builtin global variables in DB2 11?

      CLIENT_IPADDR holds the value of the client IP address for the connection.

      GET_ARCHIVE is a yes/no switch that indicates whether a reference to an archive-enabled table in

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