What are constraints? Explain different types of constraints.
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What are constraints? Explain different types of constraints.
by Micheal Tue Jan 12, 2010 8:41 pm
Constraints enable the RDBMS enforce the integrity of the database automatically, without needing you to
create triggers, rule or defaults.
Types of constraints: NOT NULL, CHECK, UNIQUE, PRIMARY KEY, FOREIGN KEY
create triggers, rule or defaults.
Types of constraints: NOT NULL, CHECK, UNIQUE, PRIMARY KEY, FOREIGN KEY
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