| Bernd Meyer (2007) | |||||||||||||||||
Abstract | |||||||||||||||||
| The system Queer is a prototype of an information system design tool which directly supports an extended Entity-Relationship model on its front-end and uses a semantically well-founded query and manipulation language based on an EntityRelationship calculus. The system basically consists of a set of compilers written in Prolog which translate data specifications, schema definitions, queries, integrity constraints, and data-manipulation statements into Prolog programs. All features mentioned are implemented in form and extent as described here. Keywords: Conceptual Modelling; Entity Relationship Model; Object-Oriented Modelling; Logic Programming; Prototyping. 1 Introduction Conceptual modelling plays the central role among the different steps in database design. The result of the modelling process is a comprehensive and first formal description of the part of the world to be modelled. Usually, this step is done by employing a semantic data model like TAXIS [35], SDM [17], IRIS [32],... | |||||||||||||||||
Publication details | |||||||||||||||||
| |||||||||||||||||