A Hybrid Query Language for an Extended Entity-Relationship Model


We present the hybrid query language HQL/EER for an Extended Entity-Relationship model. As its main characteristic, this language allows a user to freely mix graphical and textual formulation of a query. We demonstrate the user-friendliness of this query language by means of examples, and show how syntax and semantics of this language are formally deened… (More)
DOI: 10.1006/jvlc.1996.0017


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