Virtual Storage Access Method
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Virtual Storage Access Method
(database)(VSAM) An IBM disk file storage scheme first used
in S/370 and virtual storage. VSAM comprises three access
methods: Keyed Sequenced Data Set (KSDS), Relative Record Data Set (RRDS), and Entry Sequenced Data Set (ESDS).
Both IMS/DB and DB2 are implemented on top of VSAM and use its underlying data structures.
Both IMS/DB and DB2 are implemented on top of VSAM and use its underlying data structures.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)