
doi: 10.1007/bfb0021044
The Entity Relationship approach is used in many databases and information systems design methodology and tools. Its use is expanded to new types of applications and the ER-Model itself is being developed to meet new requirements based on the advanced modelling approach. In this paper we discuss the representation of static and dynamic aspects in information systems with an extended Entity-Relationship-Model Particular attention is given to a unified view of both aspects by a behaviour integrated Entity-Relationship Model.
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