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Database Systems - Section 6 Multiple Questions and Answers.
| 1. | Data security threats include | ||
| A. | hardware failure | ||
| B. | privacy invasion | ||
| C. | fraudulent manipulation of data | ||
| D. | All of the above | ||
| 2. | An operation that will increase the length of a list is | ||
| A. | Insert | ||
| B. | Look-up | ||
| C. | Modify | ||
| D. | All of the above | ||
| 3. | In SQL, which command is used to add a column/integrity constraint to a table | ||
| A. | ADD COLUMN | ||
| B. | INSERT COLUMN | ||
| C. | MODIFY TABLE | ||
| D. | ALTER TABLE | ||
| 4. | In SQL, which command(s) is(are) used to enable/disable a database trigger? | ||
| A. | ALTER TRIGGER | ||
| B. | ALTER DATABASE | ||
| C. | ALTER TABLE | ||
| D. | MODIFY TRIGGER | ||
| 5. | In a relational schema, each tuple is divided into fields called | ||
| A. | Relations | ||
| B. | Domains | ||
| C. | Queries | ||
| D. | All of the above | ||
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