Quiz 1 week (502) – Flashcards
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________ specifies the number of instances of one entity that can be associated with each instance of another entity.
A. degree
B. cardinality
C. constraint
D. counter constraint
E. limit
answer
B
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An attribute of an entity that must have a value for each entity instance is a(n):
A. optional attribute.
B. composite attribute.
C. required attribute.
D. fuzzy attribute.
answer
C
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A simultaneous relationship among the instances of three entity types is called a(n) ________ relationship.
A. ternary
B. tertiary
C. primary
D. binary
answer
A
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An attribute that can be broken down into smaller parts is called a(n) ________ attribute.
A. associative
B. simple
C. composite
D. complex
answer
C
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A business rule is a statement of how a policy is enforced or conducted.
true
false
answer
False
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A person's name, birthday, and social security number are all examples of:
A. attributes.
B. entities.
C. relationships.
D. descriptors.
answer
A
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A simple attribute can be broken down into smaller pieces.
True
False
answer
False
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A relationship between the instances of a single entity type is called a(n) ________ relationship.
A. ternary
B. primary
C. binary
D. unary
answer
D
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A business rule is a statement that defines or constrains some aspect of the business.
True
False
answer
True
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Business Rule
answer
Statements that define/constrain an aspect of the business.
..................................
-Made from: policies ,procedures,events,functions
-Enforces business structure
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Entity Type
answer
A collection of entities that share common properties or characteristics
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Entity
answer
person object ,object which an organization wants to maintain data of.
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A single occurrence of an entity is called an entity instance.
True
False
answer
True
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Composite Attribute
answer
an attribute that has meaningful component parts
Ex:Address broken into parts
-zip,city,State
