The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
Entity-Relationship Modeling: Foundations of Database Technology
Entity-Relationship Modeling: Foundations of Database Technology
Conceptual Modelling in Information Systems Engineering
Conceptual Modelling in Information Systems Engineering
Intentional Perspectives on Information Systems Engineering
Intentional Perspectives on Information Systems Engineering
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Bernhard Thalheim's landmark book titled "Entity-Relationship Modeling: Foundations of Database Technology" [9] starts with listings of weaknesses and strengths of contemporary approaches to database models. His analysis is as valid today as when it was published in 2000. An important feature of Information Systems Engineering is the need to master software and data systems complexity while at the same time being able to present design details in a comprehensible way. The trend towards embedded systems necessitates that software and data models must be integrated with models of the application domains, be they technical, organizational, people centered or a mixture thereof. What follows is a discussion of possible underlying causes of the weaknesses as stated by Bernhard Thalheim, as well as proposals to approaches for removing the weaknesses.