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CS6400 - Chapter 4 Questions with Detailed Verified Answers
knowledge representation is an area of
Ans: artificial intelligence
object modeling is an area in
Ans: software engineering
what's EER
Ans: enhanced entity-relationship (also used to stand for extended entity-relationship
EER model includes all the
Ans: modeling concepts of the ER model. And includes concepts of subclass,
superclass, and specialization and generalization. Can also include category or union
types
what are category or union types
Ans: used to represent a collection of objects (entities) that is the union of objects of
different entity types
an entity type is used to represent both
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Ans: a type of entity and the entity set or collection of entities of that type (for
example entity EMPLOYEE describes the type of each employee entity, and also refers
to the current set of EMPLOYEE entities in the COMPANY database.
the set or collection of entities in each of the child groupings is a
Ans: *subset* of the entities that belong to the parent
we call each subgroupings a
Ans: *subclass* or *subtype* of the parent entity type (e.g. parent: EMPLOYEE; child:
SECRETARY, MANAGER, ETC)
we call the relation ship between a superclass and any one of it's subclasses a
Ans: *superclass/subclass* or *supertype/subtype* or simply *class/subclass
relationship*
a subclass member is the same as the entity in the
Ans: *superclass* but in a distinct specific role
what is *type inheritance*
Ans: an entity that is a member of a subclass *inherits* all the attributes of the entity
as a member of the superclass. The entity, also inherits all the relationships in which
the superclass participates
what is specialization
© Get it right 2025 Getaway - Stuvia US All rights reserved
CS6400 - Chapter 4 Questions with Detailed Verified Answers
knowledge representation is an area of
Ans: artificial intelligence
object modeling is an area in
Ans: software engineering
what's EER
Ans: enhanced entity-relationship (also used to stand for extended entity-relationship
EER model includes all the
Ans: modeling concepts of the ER model. And includes concepts of subclass,
superclass, and specialization and generalization. Can also include category or union
types
what are category or union types
Ans: used to represent a collection of objects (entities) that is the union of objects of
different entity types
an entity type is used to represent both
© Get it right 2025 Getaway - Stuvia US All rights reserved
, Click here for more: Scholars nexus
Ans: a type of entity and the entity set or collection of entities of that type (for
example entity EMPLOYEE describes the type of each employee entity, and also refers
to the current set of EMPLOYEE entities in the COMPANY database.
the set or collection of entities in each of the child groupings is a
Ans: *subset* of the entities that belong to the parent
we call each subgroupings a
Ans: *subclass* or *subtype* of the parent entity type (e.g. parent: EMPLOYEE; child:
SECRETARY, MANAGER, ETC)
we call the relation ship between a superclass and any one of it's subclasses a
Ans: *superclass/subclass* or *supertype/subtype* or simply *class/subclass
relationship*
a subclass member is the same as the entity in the
Ans: *superclass* but in a distinct specific role
what is *type inheritance*
Ans: an entity that is a member of a subclass *inherits* all the attributes of the entity
as a member of the superclass. The entity, also inherits all the relationships in which
the superclass participates
what is specialization
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