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Line 17: The Access Method Services utility program [[IBM mainframe utility programs#IDCAMS\|IDCAMS]] is commonly used to manipulate ("delete and define") VSAM data sets. Custom programs can access VSAM datasets through Data Definition (DD) statements in [[Job Control Language]] (JCL), via dynamic allocation or in online regions such as in [[CICS\|Customer Information Control System]] (CICS). Both [[IMS/DB]]{{fact\|date=April 2021}} and [[IBM ~~DB2~~Db2\|~~DB2~~Db2]]<ref name="demystified"/>{{rp\|41}}<ref>{{cite web \|url=https://www-01.ibm.com/servers/resourcelink/svc00100.nsf/pages/izodav110sc279034/%24file/azk1b100.pdf \|title=User's Guide}}</ref> are implemented on top of VSAM and use its underlying [[data structure]]s.

Virtual Storage Access Method: Difference between revisions