Integrated Information Support System (IISS). Volume 5 - Common Data Model Subsystem. Part 45 - CDM Compare Utility User's Manual
Final rept. 1 Apr 1987-31 Dec 1990,
CONTROL DATA CORP FAIRBORN OH INTEGRATION TECHNOLOGY SERVICES
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CDM Compare is a utility used to compare two versions of a CDM and report differences in the internal, conceptual and external schemas as well as the conceptual-internal, conceptual-external and complex schema mappings. The CDM Compare utility is composed of three parts or phases 1 Extract Phase - obtains the pertinent information from a CDM and saves the information in a file. This data extraction must be done for each version of the CDM 2 Compare Phase - performs a comparison of the information obtained from the extract phase and saves the results in a table and 3 Report Phase - displays the results of the comparison. The CDM Compare utility queries the database tables of the CDM and presents its report to a terminal, a file, or a hardcopy device.
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