Relational Database Management System - DBMS Interview Questions and Answers in Multiple Choice Type

Questions

11 A primary key :

A is also referred to as a composite key

B is a unique identifier in a column

C uniquely identities the data in row

D must be accompanied by a corresponding foreign key

Answer: Option [B]

12 Duplicate data is referred to as :

A accurate data

B redundant data

C storage data

D none of the above

Answer: Option [B]

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13 A relation in third normal form is :

A in first normal form also

B second normal form also

C from transitive dependencies

D all of the above

Answer: Option [D]

14 In a relational database a referential integrity constraint can be specified with the help of

A primary key

B foreign key

C secondary key

D none of the above

Answer: Option [B]

15 In a relation

A Ordering of rows is immaterial

B No two rows are identical

C Both [A] and [B] are true

D None of the above

Answer: Option [C]

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