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CBSE Class 12 Computer Science Question 35 of 79

Table Creation and Data Manipulation Commands — Question 9

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9
Question

Question 9

............... defines rules regarding the values allowed in columns and is the standard mechanism for enforcing database integrity.

  1. Column
  2. Constraint
  3. Index
  4. Trigger
Answer

Constraint

Reason — Constraint defines rules regarding the values allowed in columns and is the standard mechanism for enforcing database integrity. Once an integrity constraint is enabled, all data in the table must confirm to the rule that it specifies.