January 2012
Intermediate to advanced
336 pages
11h 19m
English
Content preview from Express Learning: Database Management Systems
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Conceptual Modeling
1. Briefly describe conceptual data modeling.
Ans: The overall database design and implementation process starts with requirements gathering and specifications. Once the requirements of the user have been specified, the next step is to construct an abstract or conceptual model of a database based on the requirements of the user. This phase is known as conceptual modeling or semantic modeling. Conceptual modeling is an important phase in designing a successful database. It represents various pieces of data and their relationships at a very high level of abstraction. It mainly focuses on what data are required and how they should be organized rather than what operations are to be performed on the data. The model is independent ...
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