Specialization MCQ (Multiple Choice Questions) PDF Download

In an E-R diagram, specialization is represented by a

1. Hollow arrow-head
2. Solid arrow-head
3. Dashed arrow-head
4. Double arrow-head

Specifying whether or not an entity in the superclass set must belong to at least one of subclass sets within specialization, by the constraint type

1. Completeness constraint
2. Disjointness constraint
3. Overlapping constraint
4. Existence constraint

The relationship of specialization may also be known as a/an

1. Subclass-superclass relationship
2. Superclass-subclass relationship
3. Higher-level relationship
4. Lower-level relationship

A property of entity sets created by specialization and generalization is known as

1. Entity inheritance
2. Sets inheritance
3. Relational inheritance
4. Attribute inheritance

Specialization emphasizes on differences by creating distinctions among

1. Entity sets
2. Attribute sets
3. Instances
4. Relations