DB12 - DB2 for Java Developers - 4 Days

Course Description

This course provides the applications programmer with an in-depth knowledge of the DB2 development process. It is aimed at programmers who need to code or support DB2 application programs written in Java.

Pre-requisites

The delegate should be familiar with Java programming.

Objectives

The aim of this course is to provide the programmer, unfamiliar with DB2, with the necessary skills required to define, access and manipulate DB2 data, either via a Java program or using SPUFI / the DB2 Client.

On completion of this course the student will be able to:

  • set up a DB2 test environment, using correctly defined tables, views, indexes, synonyms and aliases
  • use both permanent and temporary tables
  • use the DB2I toolset or the DB2 Client to access DB2
  • code SQL statements to read and manipulate DB2 data
  • develop, prepare and execute DB2 Java programs
  • bind packages and plans
  • use non-scrollable and scrollable cursors
  • describe the locking process used by DB2
  • define and use Referential Integrity
  • use Identity Columns and Sequences
  • produce EXPLAIN output using a PLAN_TABLE
  • use the LOAD utility to populate tables
  • understand and use Java Database Connectivity
  • use the JDBC API
  • code JDBC dynamic and prepared statements
  • process JDBC results sets
  • process JDBC NULL values
  • handle JDBC errors and warnings
  • understand and use transaction control
  • understand and use Isolation Levels
  • use JDBC connection pooling techniques and DataSources
  • call Stored Procedures via Java

Environment

Development will be performed using:

  • IBM Mainframe
  • DB2 for z/OS or DB2 LUW - Versions 10, 11 or 12
  • Java IDE such as Eclipse or NetBeans

Customisation

For on-site courses (i.e. at your premises), we are more than happy to tailor the course agenda to suit your exact requirements. In many cases, we are able to build your in-house standards and naming conventions into the delivered course.

Course Details

INTRODUCTION TO DB2
The Relational Model
Data Representation
The DB2 Environment
The DB2 Table
Accessing The Data
Interfaces to DB2
SQL Structure
Embedded SQL
DB2 Data Relationships
Access Path Selection
DB2 Table Structure
DB2 Data Types
DB2 Catalog
DB2 Interactive
SPUFI
Database Design / Data Analysis
Overview Of Normalisation
First Normal Form
Order Form Example
Second Normal Form
Third Normal Form
Check 3nf

DATA DEFINITION LANGUAGE
The Structure Of DB2 Objects
Definition Of DB2 Objects - DDL
Database Definition
Tablespace / Page Organisation
Page Sizes
Tablespace Layout
Types Of Tablespace
Tablespace Definition
Table Definition
Table Names
Copying Table Definitions
Rename Table
Data Partitioning
DB2 Column Types
Null Values
User Defined Default Values
Global Temporary Tables
Declared Temporary Tables
Declared Temporary Table Considerations
Declared Temporary Tables - Comparisons
DB2 Views
Read Only Views
Views - With Check Option
Creating A View Of Two Tables
DB2 Synonym
DB2 Alias
The Alter Statements
DB2 Indexes
Index Organisation - The B Tree Index
Index Clustering
Non-Unique Indexes
Index Definition
Partitioning Indexes
Index Design Considerations
The Drop Statement

DB2 INTERACTIVE (DB2I)
DB2I Options
SPUFI - SQL Processor Using File Input
Running Queries
SPUFI Defaults
SPUFI - Setting Autocommit to NO
DB2 Commands
DB2 Utilities
The DB2I Defaults Panel

UTILITIES
Introduction
Utility Overview
Running Utilities
The LOAD Utility
The Load Utility Syntax
Online Load Resume
Online Load Considerations

DATA MANIPULATION LANGUAGE
SQL - Structured Query Language
DB2 Environments
SQL Features
SQL Query Results
The Select Statement
The 'As' Clause
The Where Clause
Special Operators
Not Operand
In Operand
Like Operand
Between Operand
Statements Using Nulls
Is Not Distinct From
Column Functions
Using 'Distinct'
Multiple Distinct
Group By Clause
Expressions / Functions in Group By
Having Clause
Order By Clause
Fetch First 'n' Rows Only Clause
Special Registers (Date, Time, Timestamp And User)
Current Date
Current Time
Current Timestamp
User Keyword
The Update Statement
Update with Subselect
The Delete Statement
The Insert Statement
The Mass Insert Statement
Select from Insert
Select from Insert Example
Scalar Functions
Function Examples
Date, Time And Timestamp Functions
The Case Statement
Table Join
Outer Joins
Outer Join Syntax
Joining More Than 2 Tables (using Newer Syntax)
Outer Join - Where Clause
Nested Table Expression
SQL Union
Subqueries
Subqueries Using In
Exists
The 'All' Subquery
The 'Any' Or 'Some' Subquery
Common Table Expressions (V8)
Common Table Expression Example
Recursive SQL (V8)
Recursive SQL Example
Recursive SQL - Controlling Depth of Recursion

DATABASE ACCESS
What is JDBC?
What alternatives are there? JDBC vs SQLJ
How does JDBC work?
JDBC Drivers and the JDBC API
Statements & Prepared Statements
Working with data
Accessing data - Working with Result Sets
Handling Warnings, Errors and NULL Values
Scalability Issues
Transaction Control and Isolation Levels
Configuring and using DataSources (using JNDI)
Calling Stored Procedures

SQLJ
SQLJ Programming - Development Cycle using DB2
SQLJ Cursor Techniques

PLANS AND PACKAGES
DB2 Bind
Rebind
Packages Overview
Explanation Of Packages
Advantages Of Using Packages
Binding Packages
Binding Plans
Defaults For Binding
Binding In Batch
Identifying A Collection Within A Program
Program Execution In Batch
Plan Names In Application Programs

IDENTITY COLUMNS AND SEQUENCES (V8)
Identity Columns
Identity Columns - Examples
Identity Column Enhancements
Altering Identity Columns
Identity Columns - New Version 8 Parameters
Identity Columns - Retrieving the Generated Number
Identity Columns - Data Sharing Implications
Using Identity Columns with the Load Utility
Sequences
Create Sequence Syntax
Sequence Ordering
Altering Sequences
Dropping Sequences
Using Sequences in Applications
Sequences - Considerations and Restrictions
Sequence Application Examples
Sequences and Identity Columns Comparison

LOCKING
Implications Of Concurrent Processing
Ims Resource Lock Manager (Irlm)
DB2 Locking Methods
The Lock Table Statement
Lock Modes
When Locks Are Acquired
When Locks Are Released
Isolation Levels
Controlling The Isolation Level At SQL Level
Keep Update Locks
Unit Of Work In TSO
Commit And Rollback
Declaring Cursors With Hold
CICS Issues
IMS Issues
Savepoints
Savepoint Definition
Savepoints - Considerations and Restrictions
Transaction Deadlocks
Design Considerations

REFERENTIAL INTEGRITY
What Is Referential Integrity?
Parent And Dependent Tables
The Primary Key
The Foreign Key
Referential Constraint Rules
Constraint Names
More Complex Referential Structures
Check Pending Status
Resetting Check Pending Status
Referential Integrity Access
Design Considerations

PERFORMANCE AND TUNING
The DB2 Explain Function
SQL Explain Statement
Plan Table Layout
Plan Table Column Definitions
Predicate Evaluation
Indexable Predicates
Stage 1 And Stage 2 Predicates
Predicate Evaluation Sequence
Indexable Stage1 Predicates

Course Format

The course contains many practical exercises to ensure familiarity with the product. Initially students create Tables and Indexes, and then proceed to develop Java programs accessing the data held on the DB2 Tables. On completion of this course students will be ready to start the development of application programs accessing DB2 data.

The comprehensive Student Guide supplied is fully indexed serving as a useful reference tool long after the course has finished. Delegates will also be able to access a free help-line with technical questions relating to topics covered on the course.

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