What are the control block in IMS?

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What are the control block in IMS?

There are two control block.
1. DBD (database descriptor )
2. PSB (program specification block)

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Other Job Interview Questions

• How does one reorg an HDAM IMS database when changing RAPS ( ROOT ANCHOR POINTS )?
• What do you know about DBDGEN?
• Which is the first statement in COBOL-IMS programs?
• What is a Root?
• What are common codes and their purpases?
• How many PCB's can be coded within a PSB
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• Is it neccessary that all the segments in a DI/i database have key fields?
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