Audience:
IMS-DB tutorial will be useful for anyone, be in a student, a software Engineer or anyone who is serious towards mastering the IMS-DB in Mainframe.
This IMS-DB tutorial will be helpful for Mainframe application program / Mainframe system programmer, to make them comfortable in getting started with IMS-DB and its various functions.
Pre-requisites:
There are no prerequisites for this IMS-DB tutorial. However you should have some knowledge on COBOL programming and any database concepts.
Would you like to learn TSO/ISPF ? Go to TSO/ISPF Tutorial
Would you like to learn JCL ? Go to JCL Tutorial
Would you like to learn COBOL ? Go to COBOL Tutorial
Would you like to learn VSAM ? Go to VSAM Tutorial
Would you like to learn CICS ? Go to CICS Tutorial
Would you like to learn CICS ? Go to Db2 Tutorial
After completing the IMS-DB tutorial,
You will be able explain all the key points in IMS DB. Many interviewers follow or touch these questions to select IMS DB developers
Topics covered in Rexx Tutorial:
- IMS-DB Introduction
- IMS Terminology
- Designing IMS Database
- IMS Access Methods
- PCB & PSB
- DL/I Programming
- Segment Search Argument(SSA)
- Command Codes
- DL/I Function Codes
- Random Retrieval(GU CALL)
- Sequential Retrieval(GN and GNP CALLs )
- IMS Status Code
- IMS Database Updates
- Insert - ISRT Call
- GET HOLD Calls
- Delete - DLET Call
- Replace - REPL Call
- Multiple Positioning
- Multiple PCB's
- First Path Databases
- Main Storage Database
- Data Entry Database
- Secondary Indexing
- Source and Target are Root Segments
- Source is Dependent and Target are Root
- Source and Target are Dependent of Same Segment Type
- Source and Target are Dependent of Different Segment Type
- Logical Databases
- Unidirectional Logical Relationship
- Bidirectional Physically Paired Logical Relationship
- Bidirectional Virtually Paired Logical Relationship
- Rules for Defining Logical Relationships
- Status Codes for Logical Relationships
- IMS-DB Status Codes