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An example of database design and description using the model and the diagrammatic technique is given. Some implications for data integrity, information retrieval, and data manipulation are discussed.<\/jats:p>\n          <jats:p>The entity-relationship model can be used as a basis for unification of different views of data: the network model, the relational model, and the entity set model. Semantic ambiguities in these models are analyzed. Possible ways to derive their views of data from the entity-relationship model are presented.<\/jats:p>","DOI":"10.1145\/320434.320440","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T11:29:03Z","timestamp":1027769343000},"page":"9-36","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":4566,"title":["The entity-relationship model\u2014toward a unified view of data"],"prefix":"10.1145","volume":"1","author":[{"given":"Peter Pin-Shan","family":"Chen","sequence":"first","affiliation":[{"name":"Massachusetts Institute of Technology, Cambridge"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[1976,3]]},"reference":[{"key":"e_1_2_1_1_2","first-page":"1","volume-title":"North-Holland Pub. Co.","author":"BRIAL J.R.","year":"1974","unstructured":",~k BRIAL , J.R. Data semantics. In Data Base Management, J.W. Klimbie and K.L. 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