A group of attributes that uniquely identifies an instance of an entity is called a(n) __________________________________.
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Q134: A(n) _ is a piece of data
Q135: The three properties of an attribute are:
Q136: The _ defines what values an attribute
Q137: The _ is the value that will
Q138: Every entity must have _.
Q140: A candidate key is the candidate to
Q141: A(n) _ is a natural business association
Q142: All relationships are implicitly _.
Q143: _ defines the minimum and maximum number
Q144: The _ of a relationship is the
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