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Computer Science Set-1
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74

Databases MCQ with Answers

74) The natural join is equal to :

Cartesian Product

Combination of Union and Cartesian product

Combination of selection and Cartesian product

Combination of projection and Cartesian product

Answer is:

Combination of selection and Cartesian product

Databases MCQ with Answers

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Related Databases MCQ with Answers

76) A primary key if combined with a foreign key creates

Parent-Child relationship between the tables that connect them.

Many to many relationship between the tables that connect them.

Network model between the tables that connect them.

None of the above.

Answer is:

Parent-Child relationship between the tables that connect them.

77) In E-R Diagram relationship type is represented by

Ellipse

Dashed ellipse

Rectangle

Diamond

Answer is:

Diamond

78) Hierarchical model is also called

Tree structure

Plex Structure

Normalize Structure

Table Structure

Answer is:

Tree structure

79) In E-R diagram generalization is represented by

Ellipse

Dashed ellipse

Rectangle

Triangle

Answer is:

Triangle

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