Classical

Database MCQ - ER-model & Relational Model

51:  

 In E-R Diagram relationship type is represented by

A.

Ellipse

B.

Dashed ellipse

C.

Rectangle

D.

Diamond

 
 

Option: D

Explanation :


52:  

 Hierarchical model is also called

A.

Tree structure

B.

Plex Structure

C.

Normalize Structure

D.

Table Structure

 
 

Option: A

Explanation :


53:  

In E-R diagram generalization is represented by

A.

Ellipse

B.

Dashed ellipse

C.

Rectangle

D.

Triangle

 
 

Option: D

Explanation :


54:  

The method of access which uses key transformation is known as

A.

Direct

B.

Hash

C.

Random

D.

Sequential

 
 

Option: B

Explanation :


55:  

 A table joined with itself is called

A.

Join

B.

Self Join

C.

Outer Join

D.

Equi Join

 
 

Option: B

Explanation :




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