Which of the following describes two desirable characteristics of a primary key?

Question

Options

• AA primary key should be a value that may be null and may change over time.
• BA primary key should be a value that is not null and will never change.
• CA primary key should consist of meaningful data and a value that can be changed if
• DA primary key should not consist of meaningful data and a value that can be changed if

• A
  9% (5)
• B
  82% (45)
• C
  7% (4)
• D
  2% (1)

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