Integrated Information Support System (IISS). Volume 5. Common Data Model Subsystem. Part 3. CDM1, IDEF1 Model of the CDM.
Final rept. 22 Sep 80-31 Jul 85,
GENERAL ELECTRIC CO SCHENECTADY NY PRODUCTION RESOURCES CONSULTING
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The Integrated Information Support System is a test computing environment used to investigate and demonstrate and test the concepts of information management and information integration in the contexts of Aerospace Manufacturing. Specifically, IISS addresses the problems of integration of data resident on heterogenous databases supported by heterogenous computers, interconnected via a Local Area Network. A Common Data Model is maintained and provides the mechanism required to integrated the data. The common Data Model Processor CDMP is a mechanism by which application programs can retrieve and update data without knowing where or how the data are stored. The CDMP relies on three of schemas conceptual, external, and internal and on two types of schema mappings conceptual-to-external and conceptual-to-internal. A schema is a description of data from a particular viewpoint. A mapping is a description of the correspondence between elements of one schema and those of another. The schemas and mappings are stored in a database, called the Common Data Model CDM, where they are available to the CDMP software. CDM1 is an IDEF1 model of the data requirements of the CDMP. It describes the entity, attribute, and relation classes that compose these schemas and mappings. It is also the basis for the design of the CDM database.
- Computer Programming and Software
- Manufacturing and Industrial Engineering and Control of Production Systems