database keys

MCQsQuestion.com has 2 Question/Answers about Topic database keys

A superkey may contain extraneous

A superkey may contain extraneous
  • A. Attributes
  • B. Keys
  • C. Instances
  • D. Entries
  • Correct Answer: Option A

Values of attribute values of a tuple must be such that they can uniquely identify the

Values of attribute values of a tuple must be such that they can uniquely identify the
  • A. Instance
  • B. Entity
  • C. Relation
  • D. Tuple
  • Correct Answer: Option D