How to Disable and Enable All Constraint for Table / Database

To enable or disable all the constraint for single table or database.

-- Disable all table constraints

ALTER TABLE YourTableName NOCHECK CONSTRAINT ALL

-- Enable all table constraints

ALTER TABLE YourTableName CHECK CONSTRAINT ALL

-- Disable single constraint

ALTER TABLE YourTableName NOCHECK CONSTRAINT YourConstraint

-- Enable single constraint

ALTER TABLE YourTableName CHECK CONSTRAINT YourConstraint

-- Disable all constraints for database

EXEC sp_msforeachtable "ALTER TABLE ? NOCHECK CONSTRAINT all"

-- Enable all constraints for database

EXEC sp_msforeachtable "ALTER TABLE ? WITH CHECK CHECK CONSTRAINT all"