Appendix AAnswers to Self Tests

Chapter 1: Database Fundamentals

1. The logical layer of the ANSI/SPARC model provides which of the following?

A. Physical data independence

B. Parent-child relationships

C. Logical data independence

D. Encapsulation

A is the correct answer.

2. The external layer of the ANSI/SPARC model provides which of the following?

A. Physical data independence

B. Parent-child relationships

C. Logical data independence

D. Encapsulation

C is the correct answer.

3. Which of the following is not true regarding user views?

A. Application programs reference them.

B. People querying the database reference them.

C. They can be tailored to the needs of the database user.

D. Data updates are shown in a delayed fashion.

D is the correct ...

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