VSAM
E724117
VSAM (Virtual Storage Access Method) is an IBM file storage access method used on mainframe operating systems to organize and manage data in various indexed and sequential formats.
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
IBM access method
ⓘ
file storage access method ⓘ mainframe data access method ⓘ |
| configuredWith | IDCAMS utility NERFINISHED ⓘ |
| dataSetTypeFullName |
ESDS: Entry-Sequenced Data Set
NERFINISHED
ⓘ
KSDS: Key-Sequenced Data Set ⓘ LDS: Linear Data Set ⓘ RRDS: Relative Record Data Set ⓘ |
| definedBy | IDCAMS DEFINE CLUSTER command ⓘ |
| developedBy | IBM NERFINISHED ⓘ |
| fullName | Virtual Storage Access Method NERFINISHED ⓘ |
| introducedIn | early 1970s ⓘ |
| logicalUnit |
control area
ⓘ
control interval ⓘ |
| replaced |
BDAM
ⓘ
ISAM NERFINISHED ⓘ |
| supportsAccessMethod |
direct access
ⓘ
indexed access ⓘ sequential access ⓘ skip-sequential access ⓘ |
| supportsDataSetType |
ESDS
NERFINISHED
ⓘ
KSDS ⓘ LDS ⓘ RRDS ⓘ |
| supportsEnvironment |
CICS
NERFINISHED
ⓘ
batch JCL jobs ⓘ |
| supportsFeature |
alternate indexes
ⓘ
control area splitting ⓘ control interval buffering ⓘ data sharing in sysplex environments ⓘ key-range partitioning ⓘ record compression ⓘ record-level access ⓘ |
| supportsLanguageAccess |
Assembler
NERFINISHED
ⓘ
COBOL NERFINISHED ⓘ PL/I NERFINISHED ⓘ |
| supportsLogging | CICS journaling and recovery ⓘ |
| supportsRecordOrganization |
fixed-length records
ⓘ
variable-length records ⓘ |
| usedFor |
CICS data storage
ⓘ
DB2 underlying storage (catalog and internal structures) ⓘ batch processing ⓘ high-volume data storage ⓘ online transaction processing ⓘ |
| usedOn |
IBM mainframe operating systems
ⓘ
MVS NERFINISHED ⓘ OS/390 NERFINISHED ⓘ VSE NERFINISHED ⓘ z/OS NERFINISHED ⓘ z/VM NERFINISHED ⓘ z/VSE NERFINISHED ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.