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FOURTH GENERATION LANGUAGES
The Impact of Fourth Generation Tools in Practice
A Case History of the Development and Implementation
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abstract activities application approach architecture ASPECT automated charts COBOL complete components computer systems concept construct created data base data dictionary data flow data flow diagram data model data structures database design DBMS defined definition delete described development environment diagram documentation domain editor entity type entity-relationship model example existing expert systems facilities Figure Fourth Generation Languages function identifier implementation Information Engineering information systems input integrated interactive IPSE IU's knowledge base logical MAJIC metamodel metasystem methods module objects operations organisation output paper PCTE performance problem procedures programming by example programming languages prototype relational database relationship requirements RM/T rules schema screen sequence software design software development Software Engineering specification Support Environments system design systems analysis systems development task techniques tuples update view mechanism