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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