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    DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review
    DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review
    DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review
    Ebook253 pages2 hours

    DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review

    By equitypress

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    About this ebook

    Because DB2 is is known for its broad spectrum of functionality, the DB2 specialist must be comfortable handling the diverse situations that arise when managing such a system. No other guide walks the administrator through the common challenges to be faced on the job like DB2 Interview Questions, Answers, and Explanations.
    Use this book to evaluate your candidate or to prepare yourself for the interview. Either way, this guide will keep you current! No other guide aids the administrator in preparation for actual complications with system maintenance and troubleshooting quite like this one — from the perspective of the administrator. More than just a walkthrough for 'dummies,' this guide explains the highest lever of user knowledge to help you secure that administrator title.

    Key interview topics include:

    • Daily administration tasks
    • System performance monitoring
    • DB2 integration
    • System backup
    • Common performance errors

    LanguageEnglish
    Publisherequitypress
    Release dateNov 7, 2011
    ISBN9781603322591
    DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review

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      Book preview

      DB2 Interview Questions, Answers, and Explanations - equitypress

      DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review

      By: IBMCOOKBOOK

      Equity Press

      DB2 Interview Questions, Answers, and Explanations: DB2 Database Certification Review

      ISBN: 978-1-60332-259-1

      Smashwords Edition

      Copyright© 2006 Equity Press and IBM COOKBOOK all rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise) without either the prior written permission of the publisher or a license permitting restricted copying in the United States or abroad.

      The scanning, uploading and distribution of this book via the internet or via any other means with the permission of the publisher is illegal and punishable by law. Please purchase only authorized electronic editions, and do not participate in or encourage piracy of copyrighted materials.

      The programs in this book have been included for

      instructional value only. They have been tested with

      care but are not guaranteed for any particular purpose.

      The publisher does not offer any warranties or

      representations, nor does it accept any liabilities with

      respect to the programs.

      Trademarks: All trademarks are the property of their respective owners. Equity Press is not associated with any product or vendor mentioned in this book.

      Please visit our website at www.ibmcookbook.com

      Table of Contents

      Question 1: Finding out the total number of rows in a DB2 table

      Question 2: Eliminating duplicate values in DB2 SELECT

      Question 3: Selecting a row using indexes in DB2

      Question 4: Finding the maximum value in a column

      Question 5: Retrieving the first 5 characters of FIRSTNAME column

      Question 6: Aggregate functions

      Question 7: MAX on a CHAR column

      Question 8: SQL statement yields inaccurate results

      Question 9: Concatenate the FIRSTNAME and LASTNAME

      Question 10: The use of VALUE function

      Question 11: UNION and UNION ALL

      Question 12: Restriction on using UNION in SQL

      Question 13: BETWEEN and IN in the WHERE clause

      Question 14: BETWEEN is inclusive of the range values

      Question 15: Use of LIKE and its wildcard characters in WHERE clause

      Question 16: Use of LIKE statement

      Question 17: Meaning of underscore in the LIKE statement

      Question 18: GROUP BY and HAVING clause

      Question 19: list of employees who are not assigned to any project

      Question 20: result of query if no rows are selected

      Question 21: SELECT is not preferred in SQL programs

      Question 22: Ways to see the table definitions

      Question 23: Cursor and its use

      Question 24: Retrieve rows from a DB2 table in SQL

      Question 25: Meaning of Dedicated and Pool Threads

      Question 26: Specify and use a cursor in COBOL program

      Question 27: Function of OPEN CURSOR

      Question 28: DECLARE CURSOR

      Question 29: more than one cursor open in a program

      Question 30: COMMIT and the cursor

      Question 31: leaving the cursor open after issuing a COMMIT

      Question 32: Definition of a VARCHAR field

      Question 33: the physical storage length of DB2 data types

      Question 34: COBOL picture clause of DB2 data types

      Question 35: COBOL picture clause for DB2 column

      Question 36: meaning of DCLGEN

      Question 37: Contents of a DCLGEN

      Question 38: Use of DCLGEN

      Question 39: Use of DECLARE TABLE in DCLGEN

      Question 40: Pre-compile of DB2-COBOL program

      Question 41: Typical DB2 batch program executed

      Question 42: SQLCA fields

      Question 43: Updated rows after update statement

      Question 44: Meaning of EXPLAIN

      Question 45: Things needed to do EXPLAIN

      Question 46: Storage location of EXPLAIN

      Question 47: Meaning of EXPLAIN with MATCHCOLS = 0

      Question 48: EXPLAIN in SQL statement

      Question 49: Simulate the EXPLAIN in SQL statement in SPUFI/QMF

      Question 50: Possible isolation levels

      Question 51: difference between CS and RR isolation levels

      Question 52: ISOLATION LEVEL

      Question 53: Use of ISOLATION LEVEL

      Question 54: Locking levels

      Question 55: Determining lock size in DB2

      Question 56: Disadvantages of PAGE level lock

      Question 57: LOCK TABLE on a view

      Question 58: Lock escalation

      Question 59: Locks available

      Question 60: Function of ALTER

      Question 61: Meaning of DBRM and PLAN

      Question 62: Use of ACQUIRE/ RELEASE in BIND

      Question 63: The access path

      Question 64: Dropped index in PLAN

      Question 65: Content of PACKAGES

      Question 66: The advantages of using a PACKAGE

      Question 67: Meaning of COLLECTION

      Question 68: The SQL codes

      Question 69: Printing the output of an SQL statement from SPUFI

      Question 70: Retrieving nth row

      Question 71: Command to reorganize indexes

      Question 72: Meaning of dynamic SQL

      Question 73: Determining the access path for dynamic SQL

      Question 74: Causes of deteriorating performance in dynamic SQL

      Question 75: DB2 store NULL physically

      Question 76: Retrieval of data from a null column

      Question 77: Picture clause of the null indicator variable

      Question 78: Meaning of null indicator with value –1, 0, and -2

      Question 79: Inserting a record in a null column

      Question 80: Function of RUNSTATS

      Question 81: Function of RUNSTATS

      Question 82: Example of statistics collected during RUNSTATS

      Question 83: Meaning and function of REORG

      Question 84: Meaning of IMAGECOPY

      Question 85: Function of IMAGECOPY

      Question 86: Meaning of COPY PENDING

      Question 87: Meaning of CHECK PENDING

      Question 88: Function of QUIESCE

      Question 89: Clustering index

      Question 90: Number of clustering indexes defined for a table

      Question 91: Diff. between primary key & unique index

      Question 92: SQL code -922

      Question 93: SQL code -811

      Question 94: SQL code of -818

      Question 95: updating views

      Question 96: updating a view of two or more tables

      Question 97: 4 environments to access DB2

      Question 98: Meaning of inner and outer joins

      Question 99: Meaning of FREEPAGE and PCTFREE

      Question 100: function of simple, segmented and partitioned table spaces

      Question 101: meaning of filter factor

      Question 102: meaning

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