Solved

An Attribute or Group of Attributes That Assumes a Unique

Question 165

Multiple Choice

An attribute or group of attributes that assumes a unique value for each entity instance is a:

A) domain
B) key
C) default value
D) data type
E) none of these

Related Questions

Q160: The requirements analysis results in a logical

Q161: Once the data model has been defined,

Q162: A candidate key is the candidate to

Q163: In a good data mode, each data

Q164: _ codes use finite combinations of letters

Q166: Conceptually cardinality defines the minimum and maximum

Q167: A generalization hierarchy can be at most

Q168: A recursive relationship is when only one

Q169: A foreign key in a child entity

Q170: _ attributes are those whose values can