Computer Science - Database Systems MCQs Part 4

1. In SQL, the command(s) is(are) used to create an index for a table or cluster

A.
CREATE INDEX
B.
MODIFY INDEX
C.
SET INDEX TO FILE
D.
All of the above
E.
None of the above

 Answer Option A

2. There are certain packages that allow people to define data items, place these items in particular records, combine the records into designated files and then manipulate and retrieve the stored data. What are they called?

A.
Data storage system
B.
Database management system (DBMS)
C.
Batch processing system
D.
Data communication package
E.
None of the above

 Answer Option B

3. A _____ DBMS distributes data processing tasks between the workstation and a network server.

A.
Network
B.
Relational
C.
Client Server
D.
Hierarchical
E.
None of the above.

 Answer Option C

4. Information can be transferred between the DBMS and a

A.
spreadsheet program
B.
word processor program
C.
graphics program
D.
All of the above
E.
None of the above

 Answer Option D

5. Data integrity control

A.
is used to set upper and lower limits on numeric data
B.
requires the use of passwords to prohibit unauthorized access to the file
C.
has the data dictionary keep the date and time of last access last back-up, and most recent modification for all files
D.
All of the above
E.
None of the above

 Answer Option C

6. In order to use a DBMS, it is important to understand

A. the physical schema
B. all sub-schemas that the system supports
C. one subschema
D. both (a) and (b)
E. None of the above

 Answer Option C

7. In SQL, which command(s) is(are) used to recompile a stored function?

A. SET FUNCTION
B. SET STORED FUNCTION
C. ALTER FUNCTION
D. All of the above
E. None of the above

 Answer Option C

8. Report generators are used to

A. store data input by a user
B. retrieve information from files
C. answer queries
D. both (b) and (c)
E. None of the above

 Answer Option D

9. Administrate supervision of database activities is the responsibility of the

A. Database administrator
B. DP Manager
C. DB Manager
D. DP administration
E. None of the above

 Answer Option A

10. Goals for the design of the logical schema include

A. avoiding data inconsistency
B. being able to construct queries easily
C. being able to access data efficiently
D. All of the above
E. None of the above

 Answer Option D

11. In SQL, which command(s) is(are) used to change a table's storage characteristics?

A. ALTER TABLE
B. MODIFY TABLE
C. CHANGE TABLE
D. All of the above
E. None of the above

 Answer Option A

12. In SQL, which of the following is not a data definition language commands?

A. RENAME
B. REVOKE
C. GRANT
D. UPDATE
E. None of the above

 Answer Option D

13. Subschema can be used to

A. create very different, personalized views of the same data
B. present information in different formats
C. hide sensitive information by omitting fields from the sub¬schema's description
D. All of the above
E. None of the above

 Answer Option D

14. Database management systems are intended to:

A. eliminate data redundancy
B. establish relationships among records in different files
C. manage file access
D. maintain data integrity
E. All of the above

 Answer Option E

15. In SQL, which command(s) is(are) used to issue multiple CREATE TABLE, CREATE VIEW, and GRANT statements in a single transaction?

A. CREATE PACKAGE
B. CREATE SCHEMA
C. CREATE CLUSTER
D. All of the above
E. None of the above ;

 Answer Option B

6. In order to use a DBMS, it is important to understand

A. the physical schema
B. all sub-schemas that the system supports
C. one subschema
D. both (a) and (b)
E. None of the above

 Answer Option C

7. In SQL, which command(s) is(are) used to recompile a stored function?

A. SET FUNCTION
B. SET STORED FUNCTION
C. ALTER FUNCTION
D. All of the above
E. None of the above

 Answer Option C

8. Report generators are used to

A. store data input by a user
B. retrieve information from files
C. answer queries
D. both (b) and (c)
E. None of the above

 Answer Option D

9. Administrate supervision of database activities is the responsibility of the

A. Database administrator
B. DP Manager
C. DB Manager
D. DP administration
E. None of the above

 Answer Option A

10. Goals for the design of the logical schema include

A. avoiding data inconsistency
B. being able to construct queries easily
C. being able to access data efficiently
D. All of the above
E. None of the above

 Answer Option D

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