Constraints in DBMS Multiple Choice Questions (MCQ) PDF Download

MCQ 1: Mapping cardinalities are useful in describing

1. Unary relationships
2. Binary relationships
3. Composite relationships
4. Simple relationships

MCQ 2: The mapping cardinalities can be of type

1. 2 types
2. 3 types
3. 4 types
4. 5 types

MCQ 3: The appropriate mapping cardinality for a particular relationship set depends on

1. Model
2. Schema
3. Situation
4. Domain

MCQ 4: The structure of the primary key for the relationship set depends on the

1. Entity sets
2. Roles
3. Mapping cardinalities
4. Mapping expression

MCQ 5: An entity set E in a relationship set R is said to be total if every entity in E participates in

1. At least one relationship in R
2. All relationships in R
3. None relationship in R
4. Few relationship in R