Accession Number : ADA181239
Title : Integrated Information Support System (IISS). Volume 5. Common Data Model Subsystem. Part 3. CDM1, IDEF1 Model of the CDM.
Descriptive Note : Final rept. 22 Sep 80-31 Jul 85,
Corporate Author : GENERAL ELECTRIC CO SCHENECTADY NY PRODUCTION RESOURCES CONSULTING
Personal Author(s) : Rollins,Dale
PDF Url : ADA181239
Report Date : 01 Nov 1985
Pagination or Media Count : 107
Abstract : 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.
Descriptors : *DATA MANAGEMENT, *INFORMATION SYSTEMS, *COMPUTER AIDED MANUFACTURING, COMPUTER PROGRAMS, COMPUTERS, DATA BASES, DATA PROCESSING EQUIPMENT, ENVIRONMENTAL TESTS, HETEROGENEITY, INTEGRATED SYSTEMS, INTEGRATION, MODELS, NETWORKS, REQUIREMENTS, TEST BEDS, COMPUTER PROGRAMS, AEROSPACE INDUSTRY
Subject Categories : Computer Programming and Software
Mfg & Industrial Eng & Control of Product Sys
Distribution Statement : APPROVED FOR PUBLIC RELEASE