Python

Constraints

You can define constraints syntactically in two ways: As part of the definition of an individual column or attribute. This is called inline specification. As part of the table definition. This is called out-of-line specification. Constraint clauses can appear in the following statements: CREATE TABLE (see CREATE TABLE) ALTER TABLE (see ALTER TABLE) CREATE VIEW (see CREATE VIEW) ALTER VIEW (see ALTER VIEW) SQL Constraints Constraint Type Description Primary Key Ensures

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