An extension to ER model for top-down semantic modeling of databases of applications

Authors:
S. K. Jain;M. M. Gore;Gulab Singh
Affiliations:
CSE Department, National Institute of Technology, Hamirpur, HP, India;CSE Department, M N National Institute of Technology, Allahabad, India;CSE Department, M N National Institute of Technology, Allahabad, India
Venue:
CIT'04 Proceedings of the 7th international conference on Intelligent Information Technology
Year:
2004

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Abstract

An extension to ER (Entity Relationship) model for semantic modeling of databases in top down manner is presented. The model proposes a new entity type called composite entity type and a table based meta construct called tabletype relationship. A composite entity type models composite entities, whereas a tabletype relationship is shorthand and represents a number of relationship types. The concept of composite entity type is abstract, helps in semantic modeling, and is not required in implementation. A composite entity type along with tabletype relationship captures semantics of the database of an application at a higher level of abstraction and provides a top down semantic modeling approach in flavor of ER model.