A supertype is an entity type that shares common attributes or relationships distinct from other subgroupings.
A. True
B. False
Answer: Option A
Solution (By Examveda Team)
A supertype is an entity type that has a relationship with one or more subtypes.It contains common attributes that are shared across all the subtypes.
Subtypes inherit these attributes and may have additional attributes of their own.
This structure helps in reducing redundancy and improving clarity in data modeling.
Therefore, the statement is True.
This Question Belongs to Database >> ER Model And Business Rules
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Comments (1)
An action assertion must include which of the following?
A. Anchor object
B. Action
C. Corresponding object
D. All of the above
An oval represents which of the following in an EER?
A. Attribute
B. Entity
C. Optional One
D. Relationship
Inheritance is which of the following?
A. When a supertype entity inherits values of the subtype attribute
B. When a subtype entity inherits values of the supertype attribute
C. When a supertype entity inherits values of another supertype attribute
D. When a subtype entity inherits values of another subtype attribute
When an entity instance must be a member of only one subtype, it is which of the following?
A. Disjoint with total specialization
B. Disjoint with partial specialization
C. Overlap with total specialization
D. Overlap with partial specialization
The answer should be A. True