Name all constraints (primary keys, foreign keys, defaults, and checks).
Named constraints should follow this pattern:
Primary key <tableName>_PK Foreign key, default, check <tableName>_<constraintIdentifier>_FK Check <tableName>_<constraintIdentifier>_CK Default <tableName>_<columnName>_DF
where constraintIdentifier is a unique string describing the constraint (e.g. CCPayment_UserID_FK). Note that maximum constraint name length is 128 characters.