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RDBMS_4

Authored by Kavitha S N

Computers

University

Used 2+ times

RDBMS_4
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents a tuple?

Column of a table

Two dimensional table

Row of a table

Key of a table

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Which notation represents an attribute in an E-R diagram?

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Identify another name for a relation.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents the constraint of the super key on two tuples t1 and t2?

t1[SK]=t2[SK]

t1[SK]!=t2[SK]

t1[PK]!=t2[SK]

t1[PK]=t2[SK]

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a DML command?

Insert

Update

Drop

Delete

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify an appropriate definition for key attribute.

Values of the attribute are distinct

Values of the attribute are unknown

Values of the attribute are atomic

Values of the attribute are same

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Weak Entity Types are identified by which of the following key?

Key attribute

Partial Key

Strong key

Weak key

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