Virtual Storage Access Method
Virtual Storage Access Method (VSAM) is an IBM DASD 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 record-oriented filesystem, VSAM comprises four data set organizations: key-sequenced (KSDS), relative record (RRDS), entry-sequenced (ESDS) and linear (LDS). The KSDS, RRDS and ESDS organizations contain records, while the LDS organization (added later to VSAM) simply contains a sequence of pages with no intrinsic record structure, for use as a memory-mapped file.
Access methodAixB+ treeCA-TelonCICSCOBOLComparison of operating systemsData set (IBM mainframe)Direct-access storage deviceDisk formattingDistributed Data Management ArchitectureEntry Sequenced Data SetExtract, transform, loadFile systemGenevaERSHistory of IBM mainframe operating systemsIBM Information Management SystemIBM MIDAWIBM Parallel SysplexIBM System Management FacilitiesIBM System z9IDEFISAMIndexed fileIndividual Master FileJob Control LanguageKey Sequenced Data SetLinear Data SetList of computing and IT abbreviationsList of file systemsMVSNomad softwareOS/360 and successorsOS/VS2 (SVS)Object access methodOpenFramePROIVRecord-oriented filesystemRecord Management Services
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Virtual Storage Access Method
Virtual Storage Access Method (VSAM) is an IBM DASD 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 record-oriented filesystem, VSAM comprises four data set organizations: key-sequenced (KSDS), relative record (RRDS), entry-sequenced (ESDS) and linear (LDS). The KSDS, RRDS and ESDS organizations contain records, while the LDS organization (added later to VSAM) simply contains a sequence of pages with no intrinsic record structure, for use as a memory-mapped file.
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Le Virtual Storage Access Meth ...... .
* Portail de l’informatique
@fr
VSAM (Virtual Storage Access M ...... lną w systemie operacyjnym OS.
@pl
VSAM (acronimo di Virtual Stor ...... strutture di dati sottostanti.
@it
VSAM: Virtual storage access m ...... ESDS由记录组成, 而LDS只包含无固定记录结构的字节流。
@zh
Virtual Storage Access Method ...... どちらも VSAM の上に実装され、そのデータ構造を用いる。
@ja
Virtual Storage Access Method ...... usando su estructura de datos.
@es
Virtual Storage Access Method ...... r use as a memory-mapped file.
@en
Virtual Storage Access Method ...... derliggende gegevensstructuur.
@nl
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1,016,447,374
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Le Virtual Storage Access Meth ...... :
* Portail de l’informatique
@fr
VSAM (Virtual Storage Access M ...... lną w systemie operacyjnym OS.
@pl
VSAM (acronimo di Virtual Stor ...... strutture di dati sottostanti.
@it
VSAM: Virtual storage access m ...... ESDS由记录组成, 而LDS只包含无固定记录结构的字节流。
@zh
Virtual Storage Access Method ...... どちらも VSAM の上に実装され、そのデータ構造を用いる。
@ja
Virtual Storage Access Method ...... en de organización intrínseco.
@es
Virtual Storage Access Method ...... r use as a memory-mapped file.
@en
Virtual Storage Access Method ...... Information Control Systems.)
@nl
label
VSAM
@it
VSAM
@nl
VSAM
@zh
Virtual Storage Access Method
@de
Virtual Storage Access Method
@en
Virtual Storage Access Method
@es
Virtual Storage Access Method
@fr
Virtual Storage Access Method
@ja
Virtual Storage Access Method
@pl
가상 기억 접근 방식
@ko