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DB2® Universal Database for OS/390 V7.1 Application Certification Guide

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DB2® Universal Database for OS/390 V7.1 Application Certification Guide

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  • Copyright 2003
  • Edition: 1st
  • Premium Website
  • ISBN-10: 0-13-100771-8
  • ISBN-13: 978-0-13-100771-0

  • IBM's definitive DB2 UDB V7.1 application development reference and exam study guide for the OS/390 and z/OS platforms
  • An official IBM self-study guide for the DB2 UDB V7.1 Family Application Development Exam (#514)
  • Expert DB2 programming tips, techniques, and guidelines from application development experts
  • Covers data structures, SQL, stored procedures, programming/language environments, debugging, tuning, and more
  • CD-ROM contains complete DB2 application development sample exam
  • The definitive, authoritative guide to DB2 OS/390 application development certification
  • Covers data structures, SQL, stored procedures, programming/language environments, debugging, tuning, and much more
  • Includes a full section on object-relational programming and other advanced techniques
  • Sample test questions help you prepare for the IBM DB2 UDB V7.1 Family Application Development Exam (#514)
About the CD

The CD-ROM included with this book contains a complete DB2 UDB V7.1 Family Application Development Exam (#514) sample exam.

IBM DB2 UDB Version 7.1 for OS/390 and z/OS delivers unparalleled performance, scalability, and reliability in today's enterprise business environments. Now, there's a complete, authoritative guide to developing applications with DB2 UDB V7.1 in both OS/390 and z/OS environments—and preparing for the IBM DB2 UDB V7.1 Family Application Development Exam (#514).

This comprehensive day-to-day guide to DB2 UDB application development is also the only book that delivers the depth of knowledge professionals need to pass IBM's challenging application development exam for the OS/390 and z/OS platforms.

IBM Gold Consultant Susan Lawson presents hundreds of useful tips, practical techniques, and expert guidelines for every facet of DB2 UDB application development and every stage of the development process for both OS/390 and z/OS platforms Coverage includes:

  • Foundations for effective DB2 development, including an overview of the DB2 UDB product family and DB2 for OS/390 data structures
  • SQL: basic concepts and coding techniques through advanced OLAP features, star schemas, and star joins
  • Stored procedures, including the SQL procedure language and IBM's Stored Procedure Builder
  • Best practices for application testing, debugging, and performance tuning
  • The full range of DB2 development tools, including ODBC/CLI, Java(tm), COBOL, C, C++, REXX, CAF, CICS, and RRSAF
  • Object-relational programming, including user-defined functions, user-defined data types, and triggers
  • In-depth coverage of locking and concurrency

Whether you're developing for DB2 UDB V7.1 in an OS/390 or z/OS environment, managing DB2 UDB V7.1 application development, preparing for DB2 UDB V7.1 Family Application Development, or all three, DB2 UDB for OS/390 Version 7.1 Application Certification Guide will be your single most valuable resource.

IBM DB2 Series

Sample Content

Online Sample Chapters

Basic SQL Coding for DB2 Universal Database for OS/390

Object-Relational Programming with DB2

Downloadable Sample Chapter

Click here for a sample chapter for this book: 0131007718.pdf

Table of Contents



Preface.


Part 1: Introduction to DB2 UDB for OS/390 and z/OS.


Part 2: Structured Query Language.


Part 3: Developing Applications.


Part 4: Programming and Language Environments.


Part 5: Advanced Programming Functions.

I. INTRODUCTION TO DB2 UDB FOR OS/390 AND Z/OS.

1. Product Overview.

DB2 and e-business. DB2 Universal Database. DB2 Middleware and Connectivity. DB2 Application Development. DB2 Administration. Data Management Tools. Summary. Additional Product Resources.

2. Database Objects.

Understanding Data Structures. Managing Database Objects. Database Design and Implementation. Access to DB2 Objects. Summary. Additional Resources.

II. STRUCTURED QUERY LANGUAGE.

3. Basic SQL Coding.

Data Retrieval. Data Modification. Inserting Data Records. Updating Data Records. Removing Data. View Classification. Summary. Additional Resources.

4. Advanced SQL Coding.

Subqueries. Unions. Nested Table Expressions. Joins. CASE Expressions. Row Expressions. OLAP Features. Summary. Additional Resources.

III. DEVELOPING APPLICATIONS.

5. Using SQL in an Application Program.

DB2 Application Development Environment. Delimiting SQL in a Program. Declaring Table and View Definitions. Host Variables and Host Structures. SQL Execution Validation. Using Cursors. Using Dynamic SQL. Summary. Additional Resources.

6. Binding an Application Program.

Precompile and Bind. Plan or Package Ownership. Summary. Additional Resources.

7. Application Program Features.

Application Program Features. Commit, Rollback, and Savepoint. Global Transactions. Global Temporary Tables. Fetch for Limited Rows. Identity Columns. Summary. Additional Resources.

8. Stored Procedures.

Stored Procedures. Benefits. Writing Stored Procedures. Defining Stored Procedures. Execution Environments. Stored Procedure Address Space (SPAS). Workload Manager. SQL Procedure Language. Developing SQL Stored Procedures. Stored Procedure Builder. Summary. Additional Resources.

9. Testing and Debugging Applications.

Establishing a Test Environment. Debugging Application Programs. Locating the Problem. Testing and Debugging Stored Procedures. Summary. Additional Resources.

10. Accessing Distributed Data.

Distributed Data. Coding Methods for Distributed Data. Programming Considerations. Remote Query Performance. Summary. Additional Distributed Resources.

IV. PROGRAMMING AND LANGUAGE ENVIRONMENTS.

11. ODBC/CLI Programming.

Embedded Dynamic Versus Call-Level Interface. The DB2 ODBC Environment. Handles. Database Connections. Transaction Control. Executing SQL Statements. Retrieving Results. ODBC Stored Procedures. Error Handling and Problem Determination. Sample program. Summary. Additional Resources.

12. DB2 Traditional Programming.

COBOL. C and C++. REXX. Summary. Additional Resources.

13. Java Programming.

DB2 and Java. JDBC. SQLJ. Design Guidelines for Applications. Java Stored Procedures and UDFs. Summary. Additional Resources.

14. Attachment Programming.

Attachments. TSO. CICS. IMS. Call Attachment Facility. RRSAF. Summary. Additional Resources.

V. ADVANCED PROGRAMMING FUNCTIONS.

15. Object-Relational Programming.

Triggers. Object-Relational Extensions. Extenders. LOB and Extender Usage. Enabling Extenders. Summary. Additional Resources.

16. Locking and Concurrency.

Locking Data. Avoiding Locks. System Parameters. Claims and Drains. Locking Issues and Problems. Summary. Additional Resources.

17. Application Performance and Optimization.

Elements of Performance. Tuning Guidelines. Access Paths and Optimization. Designing Indexes for Performance. Query Parallelism. Database Monitoring. Tracing Problems in DB2. Using DISPLAY Commands. Summary.

Appendix A. IBM Certified Solutions Expert-DB2 UDB Family Application Development.

Certification Test Objectives. Sample Test.

Appendix B. Resources.

DB2 Universal Database Server for OS/390 v7 Product Libraries.

Appendix C. DB2CERT Database DDL.
Index.

Preface

Preface

This book is an application programming guide to IBM's relational database server known as DB2 Universal Database Version 7.1 for OS/390 and z/OS. Its purpose is to provide guidance for taking the 514 DB2 Application Certification exam. However, it is much more than that. It is a compilation of information necessary to develop applications for DB2 V7 for OS/390 and z/OS. It also contains hints and tips from real-world experience in this environment.

The 514 exam covers DB2 on all platforms, including OS/390 and z/OS. For information regarding developing applications on platforms other than these two, please refer to the book authored by Tetsuya Shirai, John Barber, Mohan Saboji, Indran Naick, and Bill Wilkins—IBM DB2 UDB Application Development Environments (also published by Prentice Hall PTR).

Those interested in becoming an IBM Certified Professional will want to review the sample questions at the end of this book.

The book is divided into five parts.

Part 1: Introduction to DB2 UDB for OS/390 and z/OS

This section covers the fundamentals about the DB2 product family and the basics about the DB2 for OS/390 data structures. This information is the foundation on which applications are built in this environment. Understanding these concepts will lead to proper development with the appropriate tools.

Part 2: Structured Query Language

Part 2 covers the most robust query language: SQL (Structured Query Language). We look at basic SQL coding concepts and what the SQL language is comprised of. We then take a more in-depth look at some of the advanced features of the language.

Part 3: Developing Applications

This section is the heart of the book in terms of how to code an application in order to communicate with DB2. We first look at how to use SQL in an application program and then how to bind these programs to DB2 in order for them establish access paths to the DB2 data.

Some of the additional features of DB2 application programs are examined in terms of how we can use them to make our applications more useful and how to push more work into the DB2 engine. We then look at stored procedures, which provide us not only a way to encapsulate our code, but also a method for reducing traffic across the network. The new SQL procedure language is discussed as well as the use of the Stored Procedure Builder. We then examine how to best test and debug applications before they go into production. Finally, we look at how to access distributed data from our DB2 server within our application programs.

Part 4: Programming and Language Environments

Part 4 looks at how some of our more traditional programming languages, such as COBOL, C, C++, and REXX, access DB2. We then look at some more current methods, such as ODBC/CLI programming and Java. We also take a look at attachment programming techniques using CAF, CICS, and RRSAF.

Part 5: Advanced Programming Functions

In Part 5 we discuss the features of DB2 that support object-relational programming, such as user-defined functions, user-defined data types, and triggers. We also look at important aspects of application performance in terms of how to diagnose and tune problems. This includes looking at explain output and comparing it to available indexes and the SQL coding techniques.

Locking and concurrency is also a very important issue, because we have to be able to run several applications at the same time and to get the work through the system in an appropriate amount of time, while keeping the integrity of our data intact. In this section we look at all the options for locking and how to use them for best concurrency.

This book can be used as a self-study guide to help you prepare for the 514 DB2 Application Certification exam or simply as a guide to developing applications in a DB2 Universal Database V7.1 for OS/390 and z/OS environment. For information about the DB2 UDB family, refer to the other IBM certification books.

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