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To include integrity constraint in an existing relation use :

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To include integrity constraint in an existing relation use : (a) Create table (b) Modify table (c) Alter table (d) Drop table I got this question in an online quiz. Question is from Integrity Constraints in chapter SQL : Queries, Constraints and Triggers of Database Management Select the correct answer from above options Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

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Correct option is (c) Alter table Best explanation: SYNTAX – alter table table-name add constraint, where constraint can be any constraint on the relation.

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