![]() By extending the range of metadata held, the attributes of an application could be held within a dictionary and used at runtime. ![]() Īnother major thread emerged as a logical extension to the data dictionary of a database. His Problem Statement Language / Problem Statement Analyzer (PSL/PSA) tool was a CASE tool although it predated the term. ![]() Several papers by Daniel Teichroew fired a whole generation of enthusiasts with the potential of automated systems development. The Information System Design and Optimization System (ISDOS) project, started in 1968 at the University of Michigan, initiated a great deal of interest in the whole concept of using computer systems to help analysts in the very difficult process of analysing requirements and developing systems.
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