By Keng Siau

Complicated subject matters in Database study positive factors the newest, state of the art examine findings facing all points of database administration, structures research and layout and software program engineering. This e-book offers info that's instrumental within the development and improvement of thought and perform concerning info know-how and administration of knowledge assets.

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N-ary relationships in ER models continue to be constructs that are misunderstood by educators, difficult to apply for practitioners, and problematic in their interpretation to relational schemas. These problems are due to causes ranging from a difficulty in identifying legitimate ternary relationships in practical situations to the lack of understanding of the construct in relation to the basis of normalization upon which the relational model is grounded. Song, Evan, and Park (1995) provide a comparative analysis of conceptual modeling notations.

Data and Knowledge Engineering, 19, 39-64. Krippendorf, M. and Song, I. Y. (1997). The translation of star schema into entity-relationship diagrams. In Proceedings of 8th International Workshop on Database and Expert Systems Applications (DEXA ’97), Toulouse, France. Ling, T. W. (1985). A normal form for entity-relationship diagrams. In Proceedings of 4th International Conference on the Entity-Relationship Approach. Silver Springs, MD: IEEE Computer Society Press. Markowitz, V. M. and Shoshani, A.

Fundamentals of Database Systems (third edition). Redwood City, CA: Benjamin/Cummings. , Ng, P. and Springsteel, F. (1983). The problem of equivalence for entityrelationship diagrams. IEEE Transactions on Software Engineering. SE-9(5), September, 617-630. Jones, T. H. and Song, I. Y. (1993). Binary imposition rules and ternary decomposition. In Proceedings of InfoScience ’93, Conference on Information Science and Technology, Korea Information Science Society (KISS’93), Seoul, Korea. Jones T. and Song I.

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