RDBMS Objective Question Bank with Answers | Database Management System MCQs and Answers

41 The relational model is concerned with
A Data structure and Data integrity
B Data manipulation
C Both [A] and [B]
D None of these

Answer: Option [C]
42 Which key provides the basic tuple-level addressing mechanism in a relational System ?
A Candidate Key
B Alternative Key
C Primary Key
D None of these

Answer: Option [A]
43 Pick out the false statement from the following :
A A view is a named derived table
B A view is named relation and is virtual
C A name relation is a variable
D None of these

Answer: Option [D]
44 Any entity in A is associated with any number of entities in B, however an entity in B is associated with almost one entity in A
A One to One
B Many to Many
C Many to One
D One to Many

Answer: Option [D]
45 The union of Primary keys of the related entity sets becomes a ________ of the relation.
A Super Key
B Candidate Key
C Foreign Key
D Primary Key

Answer: Option [A]


Month-wise Current Affairs 2021

Category-wise Current Affairs

Jobs by Qualification

Free Mock Test