Database Systems - Section 1 (2)

9.

In SQL, which command(s) is(are) used to enable/disable all triggers on a table?

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

Answer: Option B

Explanation:

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10.

Updating a database means

A.	revising the file structure
B.	reorganizing the database
C.	modifying or adding record occurrences
D.	All of the above
E.	None of the above

Answer: Option C

Explanation:

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11.

The logical data structure with a one-to-many relationship is a :

A.	network
B.	tree
C.	chain
D.	relational
E.	None of the above

Answer: Option B

Explanation:

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12.

The highest level in the hierarchy of data organization is called

A.	data bank
B.	database
C.	data file
D.	data record
E.	None of the above

Answer: Option B

Explanation:

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13.

In SQL, GRANT command is used to

A.	allow user to access databases
B.	allow user to create databases
C.	grant system privileges, roles, and object privileges to uses and roles
D.	choose auditing for specific SQL commands
E.	None of the above

Answer: Option C

Explanation:

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14.

Which of the following is true of a network structure?

A.	It is a physical representation of the data
B.	It allows a many-to-many relationship
C.	It is conceptually simple
D.	It will be the dominant data base of the future
E.	None of the above

Answer: Option B

Explanation:

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15.

A form defines

A.	where data is placed on the screen
B.	the width of each field
C.	both (a) and (b)
D.	All of the above
E.	None of the above

Answer: Option C

Explanation:

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16.

A file produced by a spreadsheet

A.	is generally stored on disk in an ASCII text format
B.	can be used as it by the DBMS
C.	can be used for graphic
D.	All of the above
E.	None of the above

Answer: Option A

Explanation:

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