Appendixes AAnswers to Self Tests
Chapter 1: Introduction to Data Modeling
1. A ____________ describes how the data in an information system is represented and accessed.
data model
2. The physical layer of the ANSI/SPARC model contains ____________.
data files
3. An entity that represents a specialization of another entity is called a ____________.
subtype
4. A ____________ model is a data model tailored to a particular type of database management system such as relational, object-relational, object-oriented, hierarchical, or network.
logical
5. A ____________ model is a high-level model that captures data and relationship concepts in a technology-independent manner.
conceptual
6. A ____________ model is a data model that is tailored to the features ...
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