Constraint enforcement identifies rows containing a value violating a constraint. A SQL DELETE statement is generated for each row violating the constraint utilizing an index value associated with each row. Initialization of a CHECK utility performing constraint enforcement includes identifying an index...http://www.google.fr/patents/US6304876?utm_source=gb-gplus-shareBrevet US6304876 - Method for enforcing integrity constraints in a database table using an index
Method for enforcing integrity constraints in a database table using an index
