Computer Science - Database Systems

Exercise :: Database Systems - Section 1

6. 

After you _____ a record, many data management the environments require you to issue a command to save the changes you made.

A. Delete
B. Update
C. Sort key
D. Index
E. None of the above

Answer: Option B

Explanation:

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7. 

What is the language used by most of the DBMSs for helping their users to access data?

A. High level language
B. Query language
C. SQL
D. 4GL
E. None of the above

Answer: Option B

Explanation:

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8. 

Data item characteristics that are important in data management include

A. punctuation
B. language
C. spelling
D. width
E. None of the above

Answer: Option D

Explanation:

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9. 

In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction?

A. ZIP
B. PACK
C. COMMIT
D. SAVE
E. None of the above

Answer: Option C

Explanation:

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10. 

Periodically adding, changing and deleting file records is called file

A. Updating
B. upgrading
C. restructuring
D. renewing
E. None of the above

Answer: Option A

Explanation:

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