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Q.

The term attribute refers to a ___________ of a table.

A

Record

B

Column

C

Tuple

D

Key

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MCQ

1.

Let us consider phone_number ,which can take single or several values . Treating phone_numberas an _________ permits instructors to have several phone numbers (including zero) associated with them.

A

Entity

B

Attribute

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Relation

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Value

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2.

A window into a portion of a database is

A

Schema

B

View

C

Query

D

Data dictionary

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3.

Drop Table cannot be used to drop a table referenced by a _________ constraint.

A

Local Key

B

Primary Key

C

Composite Key

D

Foreign Key

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Key to represent relationship between tables is called

A

Primary key

B

Secondary Key

C

Foreign Key

D

None of the mentioned

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5.

E-R model uses this symbol to represent weak entity set ?

A

Dotted rectangle.

B

Diamond

C

Doubly outlined rectangle

D

None of these

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