July 2010
Intermediate to advanced
976 pages
30h 19m
English
Content preview from Information Modeling and Relational Databases, 2nd Edition
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1.5. Summary
This chapter provided a motivation for studying conceptual modeling and presented a brief historical and structural overview of information systems. Database management systems are widely used and are a major productivity tool for businesses that are information oriented. For a database to be used effectively, its data should be correct, complete, and efficiently accessed. This requires that the database is well-designed. Designing a database involves building a formal model of the business domain or universe of discourse (UoD). To do this properly requires a good understanding of the UoD and a means of specifying this understanding in a clear, unambiguous way.
Object-Role Modeling (ORM) simplifies the analysis and design process ...