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Answer» VSAM = Virtual Storage Access Method
Virtual storage access method (VSAM) an IBM disk FILE storage access method,first used in the OS/VS1, OS/VS2 Release 1 (SVS) and Release 2 (MVS)operating systems, later used throughout the Multiple Virtual Storage (MVS) architecture and now in z/OS. ORIGINALLY a RECORDoriented filesystem.[NB 2], VSAM comprises four[NB 2] data SET organizations: Key Sequenced Data Set (KSDS), Relative Record Data Set (RRDS), Entry Sequenced Data Set (ESDS) and Linear Data Set (LDS). VSAM = Virtual Storage Access Method
Virtual storage access method (VSAM) an IBM disk file storage access method,first used in the OS/VS1, OS/VS2 Release 1 (SVS) and Release 2 (MVS)operating systems, later used throughout the Multiple Virtual Storage (MVS) architecture and now in z/OS. Originally a recordoriented filesystem.[NB 2], VSAM comprises four[NB 2] data set organizations: Key Sequenced Data Set (KSDS), Relative Record Data Set (RRDS), Entry Sequenced Data Set (ESDS) and Linear Data Set (LDS).
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