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Data Models and the ANSISPARC Architecture
Semantic Data Models Roger King and Dennis McLeod
ProcessingRequirement Modeling and Its Applications
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access paths Algorithm analysis approach association attributes COBOL CODASYL composite entity type Computer conceptual schema CUSTNUM Data Base data dictionary data items data model data-structure diagram data-structure set database management system database model Database Systems DBMS decomposition defined deletion dependency described design process document EMP record employee Entity-Relationship Entity-Relationship Model example exist external schema faculty fanout function hierarchical hierarchical databases identified implementation information requirements Information Systems input instance integrity language logical database design logical design logical schema many-to-many mapping merging NAME network schema node object classes occurrences one-to-many operations output process schema processing requirements PROD-MOD-NO PROJ query redundant relation scheme relational database relational model relationship type Report represented retrieval schema design schema restructuring segment semantic set types shown in Figure specification structure student Subscribers subtype SUPPLIER target techniques tion transaction tuple update value type VEND-NO