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.

References in periodicals archive ?
Xbridge Host Data Connect enables Windows(R), Web and mobile applications to quickly and securely access virtually all OS/390(R) and z/OS(R) mainframe data including Virtual Storage Access Method (VSAM), Innovation Data Access (IAM(R)), Queued Sequential Access Method (QSAM), DataBase 2 (DB2) and Information Management System (IMS DB), and to see the data in the format of the requesting application (e.
Xbridge Host Data Connect enables Windows(R), Web and mobile applications to quickly and securely access virtually all OS/390(R) and z/OS mainframe data including Virtual Storage Access Method (VSAM), Queued Sequential Access Method (QSAM), DataBase 2 (DB2) and Information Management System (IMS DB), and to see the data in the format of the requesting application (e.
Xbridge Host Data Connect allows browsers and Windows(R) applications to directly access Virtual Storage Access Method (VSAM), Queued Sequential Access Method (QSAM), DataBase 2 (DB2) and Information Management System (IMS) DB data, and to see that data in the format of the requesting application (such as Excel), all in real time.

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