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Database Systems - Section 5 Multiple Questions and Answers.
| 11. | The data dictionary tells the DBMS | ||
| A. | what files are in the database | ||
| B. | what attribute are possessed by the data | ||
| C. | what these files contain | ||
| D. | All of the above | ||
| 12. | In SQL, which command(s) is(are) used to enable/disable a database trigger? | ||
| A. | MODIFY USER | ||
| B. | CHANGE USER | ||
| C. | ALTER TRIGGER | ||
| D. | All of the above | ||
| 14. | The relational model uses some unfamiliar terminology. A tuple is equivalent to a: | ||
| A. | record | ||
| B. | field | ||
| C. | file | ||
| D. | data base | ||
| 15. | The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain? | ||
| A. | Bits | ||
| B. | Characters | ||
| C. | Data field | ||
| D. | Schema | ||
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