Database Questions and Answers
| 13. |
______ means that the data contained in a database is accurate and reliable. |
| |
- A. Data integrity
- B. Data reliability
- C. Data consistency
- D. Data redundancy
|
| 14. |
Rows of a relation are called |
| |
- A. Data structure
- B. Tuples
- C. Relation
- D. An entity
|
| 15. |
In a ER diagram, an entity key of one file that also appears in another file |
| |
- A. Primary key
- B. Foreign key
- C. Physical key
- D. Logical key
|
| 16. |
Periodically adding, changing and deleting file records is called ______ file. |
| |
- A. Updating
- B. Upgrading
- C. Restructuring
- D. Renewing
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