z/OS Mainframe Enterprise Management, Analysis, Protection, and Repair Solutions
By Blair Svihra An ICF catalog is comprised of two entities: the Basic Catalog Structure (BCS) and the VSAM Volume Data Set (VVDS). Up until DFP 3, the VVDS was strictly used as a repository for describing the VSAM data sets physically residing on the volume with the VVDS. Variable
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