A database management system is provided for security of database objects. These objects may be passive elements such as tables, rows, views, the databases themselves, etc., or they may be executable items such as stored procedures or triggers. A mechanism is provided for "certifying" that certain types...http://www.google.cl/patents/US5572673?utm_source=gb-gplus-sharePatent US5572673 - Secure multi-level system for executing stored procedures
