Question
Explain in brief what are the 3 types of vsam files?
Answers
Below are the 3 types of VSAM files.

ESDS (Entry sequenced dataset). DB2 uses a special type of ESDS.
RRDS (Relative record dataset). Records are accessed using a relative number.
KSDS (Key sequenced dataset) is the most common type encountered. The record sequence is determined by a unique key field.   Your Comment




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