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CBSE Class 12 Informatics Practices Question 36 of 103

Review of Database Concepts & SQL — Question 6

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6
Question

Question 6

............... is a set of one or more attributes that can uniquely identify tuples within the relation.

  1. Primary Key
  2. Cardinality
  3. Attributes
  4. Foreign Key
Answer

Primary Key

Reason — A primary key is a set of one or more attributes/fields which uniquely identifies a tuple/row in a table.