Catalog Basics | VVDS
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. VariableThis content is restricted to site members. If you are an existing user, please log in. New users may register below.