IMS/DC for Applications Programmers

Course Objectives
On completion of this Course the student will be able to:

• Write a typical Message Processing Program
• Describe the differences in conversational programs
• Describe the useful facilities of IMS DC
• Write and test a simple PSB
• Use BTS to test an MPP
• Understand and use simple MFS

Course Details

• INTRODUCTION TO IMS/DC
• DB and DC Comparison
• IMS Program Execution
• Batch Message Processing Program (BMP)
• IMS Message Scheduling
• Logical Terminal Concept
• IMS Message Types
• IMS/DC PROGRAMMING
• IMS Commands
• The I/O PCB
• IMS/DC Program Execution
• Message Calls
• IMS/DC Status Codes
• Alternate Destinations
• Program to Program Messages
• Modifiable PCBs
• Express PCBs
• Conversational Processing
• CONVERSATIONAL PROGRAMS
• The Scratch Pad Area
• Conversational Program Structure
• CHECKPOINT AND RECOVERY
• Commit Points
• Types of Checkpoint
• GSAM Database
• BATCH TERMINAL SIMULATOR (BTS)
• BTS Overview
• ./T Command Statement
• ./D Command Statement
• ./O Command Statement
• Other BTS Command Statements
• MESSAGE FORMAT SERVICE (MFS)
• MFS Objectives
• MFS Message Descriptor
• MFS Device Format
• Application Programs & MFS
• MFS Control Block Chaining

Course Environment Development will be performed using:

• IBM Mainframe

Course Format: Practical sessions make up a large part of the course, allowing delegates to demonstrate and reinforce the lectures given. During these sessions the delegate will gain experience of writing and testing a well structured COBOL or PL/1 online program to access IMS transactions, using the parameters taught. Delegates will also be able to access a free help-line with technical questions relating to topics covered on the course.