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Test Bank For Database Principles Fundamentals of Design Implementation and Management International Edition 10th Edition by Carlos Coronel £24.49
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Chapter 3: Data Models
TRUE/FALSE
1. A data model is usually graphical. ANS: T PTS: 1
2. The terms data model and database model are often used interchangeably. ANS: T PTS: 1
3. An implementation-ready data model should contain a description of the data structure that will store the end-user d...
11. An operational database is sometimes referred to as an enterprise database.
ANS: F PTS: 1
12. A data warehouse can store data derived from many sources.
ANS: T PTS: 1
13. The same data might be simultaneously structured and unstructured depending on the intended
processing.
ANS: T PTS: 1
14. Corporations use only structured data.
ANS: F PTS: 1
15. Historically, a manual file system was composed of a system of file folders and filing cabinets.
ANS: T PTS: 1
16. Initially the files within a computer file system were similar to manual files.
ANS: T PTS: 1
17. Structural dependence exists when it is possible to make changes in the file structure without affecting
the application program’s ability to access the data.
ANS: F PTS: 1
18. A query language is a procedural language.
ANS: F PTS: 1
19. One disadvantage of a database system over previous data management approaches is increased costs.
ANS: T PTS: 1
20. One advantage of a database system over previous data management approaches is that the database
system is considerably less complex.
1. ____ is used to reveal the meaning of data.
a. Raw facts c. Formatting
b. Knowledge d. Information
ANS: D PTS: 1
2. Accurate, relevant, and timely information is the key to ____.
a. data management c. knowledge
b. good decision making d. understanding
ANS: B PTS: 1
3. ____ is the body of information and facts about a specific subject.
a. Data c. Knowledge
b. Information d. A database
ANS: C PTS: 1
4. End-user data is ____.
a. raw facts about the end-user
b. raw facts of interest to the end-user
c. data about data
d. accurate, relevant and timely information
ANS: B PTS: 1
5. ____ provide(s) a description of the data characteristics and the set of relationships that link the data
found within the database.
a. Queries c. Metadata
b. End-user data d. Information
ANS: C PTS: 1
6. The ____ serve(s) as the intermediary between the user and the database.
a. DBMS c. end-user data
b. metadata d. programming language
ANS: A PTS: 1
7. The database structure in a DBMS is stored as a ____.
a. file c. set of key/value pairs
b. collection of files d. collection of queries
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