Execute Direct Access Program: Difference between revisions

Revision as of 20:10, 7 May 2011

Revision as of 00:42, 8 May 2011

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{{Mainframe I/O access methods}}

In [[IBM mainframe]] [[operating system]]s, '''Execute Direct Access Program''' ('''XDAP''') is a pseudo access method for accessing direct access data setsdatasets on a record by record basis.

Existing records may be read or updated. The dataset may not be extended using XDAP; for that purpose BDAM or BPAM is required. XDAP may coexist with BDAM or BPAM, and several OS components are implemented in this way.