Which of the following statements is TRUE of identifiers?
A) They are constraints on minimum requirements in a relationship.
B) They are data that users want to track.
C) They highlight instances of data duplication in a database.
D) They are attributes whose values are associated with only one entity instance.

Question

Quizplus · Accepted Answer

Identifiers are attributes whose values are associated with only one entity instance. They are used to uniquely identify a particular entity instance in a table. Option A is incorrect as it describes minimum cardinality constraints. Option B is incorrect as it describes user-defined data. Option C is incorrect as it describes the identification of data duplication, whereas identifiers are used to uniquely identify a particular entity instance.

Which of the Following Statements Is TRUE of Identifiers