Description

Introduction:
This training equips participants with practical and theoretical knowledge to integrate PL/I programs with DB2 and IMS databases. It covers core programming techniques, advanced data handling, and mainframe-specific best practices. By the end of the course, participants will be able to develop robust, efficient, and maintainable PL/I applications for enterprise data systems.

Prerequisites:

• Basic to intermediate knowledge of PL/I programming

• Understanding of relational (DB2) and hierarchical (IMS) databases

• Familiarity with mainframe environments, JCL, and TSO/ISPF is beneficial

• Basic knowledge of SQL for DB2

Table of Contents:

1. Overview of PL/I and Mainframe Databases
   1.1 Evolution of PL/I in enterprise systems
   1.2 Introduction to DB2: architecture, tablespaces, and relationships
   1.3 Introduction to IMS: database hierarchy, segments, and control blocks
   1.4 Comparing DB2 and IMS for enterprise applications
   1.5 Typical PL/I use cases with DB2 and IMS

2. PL/I and DB2 Integration
   2.1 Embedding SQL in PL/I: static and dynamic SQL
   2.2 Declaring host variables and working with data types
   2.3 Connecting, committing, and rolling back transactions
   2.4 Working with cursors for multi-row processing
   2.5 Error handling using SQLCODE and SQLSTATE
   2.6 Performance optimization: indexes, join strategies, and access paths
   2.7 Best practices for maintainable DB2-PL/I programs

3. PL/I and IMS Integration
   3.1 Overview of IMS DL/I API calls from PL/I
   3.2 Navigating hierarchical databases: GET, PUT, REPL, and DELETE
   3.3 Handling multiple segments and key structures
   3.4 Error handling and recovery in IMS transactions
   3.5 Using IMS batch and online processing effectively
   3.6 Performance considerations: minimizing I/O and optimizing DB access

4. Advanced Data Handling Techniques
   4.1 Combining DB2 and IMS access in single PL/I programs
   4.2 Dynamic SQL execution and programmatic query generation
   4.3 Data validation, consistency checks, and exception handling
   4.4 Logging and auditing database operations
   4.5 Debugging PL/I database programs using mainframe tools (Interactive Debugger, File-AID, etc.)

5. Security, Transactions, and Concurrency
   5.1 Managing database locks and concurrency in DB2 and IMS
   5.2 Handling deadlocks and transaction conflicts
   5.3 Security considerations for PL/I applications accessing databases
   5.4 Best practices for sensitive data handling

6. Practical Labs and Hands-On Exercises
   6.1 Creating PL/I programs that insert, update, and retrieve data from DB2
   6.2 Building PL/I programs to navigate IMS hierarchies
   6.3 Sample case study: integrating DB2 and IMS for an enterprise payroll system
   6.4 Debugging, optimizing, and testing database programs

7. Real-World Applications and Case Studies
   7.1 Banking and finance applications using PL/I with DB2
   7.2 Insurance claims processing using PL/I with IMS
   7.3 Modernizing legacy PL/I applications for improved efficiency
   7.4 Migration strategies and integrating with new technologies

Participants will leave with deep technical expertise in PL/I database integration, practical experience in writing and optimizing database programs, and the ability to maintain and modernize enterprise applications using both DB2 and IMS databases.