{"date_created":"2019-03-04T11:52:08Z","abstract":[{"text":"Semantic data models have been widely studied for the conceptual specification of databases. However, most of these data models are restricted to the description of the static structure of a database. They do not provide means to specify the dynamic behaviour of a database. This paper sketches a language for the specification of actions on databases which have been specified by an Extended Entity-Relationship (EER) schema. These actions are based on so-called elementary actions, which are automatically be derived from the EER schema. So, it can always be guaranteed that these schema dependent elementary actions preserve all inherent integrity constraints. The semantics of the elementary actions is given in two steps: First, it is shown how the semantics of a database schema, i.e., a current database state, can be represented by an attributed graph. Then, the semantics of elementary actions is given by programmed graph replacements.","lang":"eng"}],"doi":"http://dx.doi.org/10.1007/BFb0017372","page":"344-362","volume":532,"_id":"8259","title":"Elementary Actions on an Extended Entity-Relationship Database","department":[{"_id":"66"}],"user_id":"52534","citation":{"chicago":"Engels, Gregor. “Elementary Actions on an Extended Entity-Relationship Database.” In <i>Proceedings of the Workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)</i>, 532:344–62. Berlin/Heidelberg: Springer, 1990. <a href=\"http://dx.doi.org/10.1007/BFb0017372\">http://dx.doi.org/10.1007/BFb0017372</a>.","short":"G. Engels, in: Proceedings of the Workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany), Springer, Berlin/Heidelberg, 1990, pp. 344–362.","apa":"Engels, G. (1990). Elementary Actions on an Extended Entity-Relationship Database. In <i>Proceedings of the workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)</i> (Vol. 532, pp. 344–362). Berlin/Heidelberg: Springer. <a href=\"http://dx.doi.org/10.1007/BFb0017372\">http://dx.doi.org/10.1007/BFb0017372</a>","ama":"Engels G. Elementary Actions on an Extended Entity-Relationship Database. In: <i>Proceedings of the Workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)</i>. Vol 532. Berlin/Heidelberg: Springer; 1990:344-362. doi:<a href=\"http://dx.doi.org/10.1007/BFb0017372\">http://dx.doi.org/10.1007/BFb0017372</a>","mla":"Engels, Gregor. “Elementary Actions on an Extended Entity-Relationship Database.” <i>Proceedings of the Workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)</i>, vol. 532, Springer, 1990, pp. 344–62, doi:<a href=\"http://dx.doi.org/10.1007/BFb0017372\">http://dx.doi.org/10.1007/BFb0017372</a>.","bibtex":"@inproceedings{Engels_1990, place={Berlin/Heidelberg}, title={Elementary Actions on an Extended Entity-Relationship Database}, volume={532}, DOI={<a href=\"http://dx.doi.org/10.1007/BFb0017372\">http://dx.doi.org/10.1007/BFb0017372</a>}, booktitle={Proceedings of the workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)}, publisher={Springer}, author={Engels, Gregor}, year={1990}, pages={344–362} }","ieee":"G. Engels, “Elementary Actions on an Extended Entity-Relationship Database,” in <i>Proceedings of the workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)</i>, 1990, vol. 532, pp. 344–362."},"year":"1990","place":"Berlin/Heidelberg","status":"public","intvolume":"       532","author":[{"full_name":"Engels, Gregor","last_name":"Engels","id":"107","first_name":"Gregor"}],"publisher":"Springer","type":"conference","date_updated":"2022-01-06T07:03:52Z","publication":"Proceedings of the workshop on Graph Grammars and Their Application to Computer Science (1990), Bremen (Germany)","language":[{"iso":"eng"}]}