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MCQ

Q.

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

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1.

The modify operation is likely to be done after

A

Delete

B

Look-up

C

Insert

D

All of the above

E

None of the above

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An on-line commercial site such as Amazon.com is an example of a(n) ________ .

A

single-user database application

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multiuser database application

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e-commerce database application

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data mining database application

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Sort/report generators

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are faster than index/report generators

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require more disk space than index/report generators

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both (a) and (b)

E

None of the above

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4.

The DBMS acts as an interface between what two components of an enterprise-class database system?

A

Database application and the database

B

Data and the database

C

The user and the database application

D

Database application and SQL

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5.

In SQL, which command is used to select only one copy of each set of duplicable rows

A

SELECT DISTINCT

B

SELECT UNIQUE

C

SELECT DIFFERENT

D

All of the above

E

None of the above

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