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Some Considerations on the Entity-Relationship Model.

A. Min Tjoa, Roland Wagner: Some Considerations on the Entity-Relationship Model. ER 1979: 145-154
@inproceedings{DBLP:conf/er/TjoaW79,
  author    = {A. Min Tjoa and
               Roland Wagner},
  editor    = {Peter P. Chen},
  title     = {Some Considerations on the Entity-Relationship Model},
  booktitle = {Entity-Relationship Approach to Systems Analysis and Design.
                Proc. 1st International Conference on the Entity-Relationship
               Approach},
  publisher = {North-Holland},
  year      = {1979},
  isbn      = {0-444-85487-8},
  pages     = {145-154},
  ee        = {db/conf/er/TjoaW79.html},
  crossref  = {DBLP:conf/er/79},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

Abstract

In this paper some aspects of well known data base modelling concepts are discussed for the entity-relationship model. Abrial's concept of unknown values is introduced and a realization within the entity-relationship model is proposed. Since the concept of weak dependencies is very important for the process of designing a suitable enterprise schema, the relevance of weak dependencies for the entity-relationship model is explored. Furthermore embedded weak dependencies are considered.

ACM SIGMOD Anthology

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References

[1]
Jean-Raymond Abrial: Data Semantics. IFIP Working Conference Data Base Management 1974: 1-60 BibTeX
[2]
Catriel Beeri, Philip A. Bernstein, Nathan Goodman: A Sophisticate's Introduction to Database Normalization Theory. VLDB 1978: 113-124 BibTeX
[3]
Catriel Beeri, Philip A. Bernstein: Computational Problems Related to the Design of Normal Form Relational Schemas. ACM Trans. Database Syst. 4(1): 30-59(1979) BibTeX
[4]
Philip A. Bernstein: Synthesizing Third Normal Form Relations from Functional Dependencies. ACM Trans. Database Syst. 1(4): 277-298(1976) BibTeX
[5]
Jean-Marc Cadiou: On Semantic Issues in the Relational Model of Data. MFCS 1976: 23-38 BibTeX
[6]
Peter P. Chen: The Entity-Relationship Model - Toward a Unified View of Data. ACM Trans. Database Syst. 1(1): 9-36(1976) BibTeX
[7]
Ronald Fagin: Multivalued Dependencies and a New Normal Form for Relational Databases. ACM Trans. Database Syst. 2(3): 262-278(1977) BibTeX
[8]
...
[9]
Moshé M. Zloof: Query by Example. AFIPS National Computer Conference 1975: 431-438 BibTeX
[10]
...
[11]
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Referenced by

  1. Marc Junet, Gilles Falquet, Michel Léonard: ECRINS/86: An Extended Entity-Relationship Data Base Management System and its Semantic Query Language. VLDB 1986: 259-266
  2. Marc Junet: Design and Implementation of an Extended Entity-Relationship Data Base Management System (ECRINS/86). ER 1986: 305-322
  3. Johann Eder, Gerti Kappel, A. Min Tjoa, Roland Wagner: BIER - The Behaviour Integrated Entity Realtionship Approach. ER 1986: 147-166
  4. Peter P. Chen: Recent Literature on the Entity-Relationship Approach. ER 1979: 3-12
BibTeX
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