A security apparatus and method that provides Multi-Level and Multi-Category Mandatory Access Control (MAC) for controlling access to data within a database at the granularity of the data record. The access control mechanism is implemented so that it has no impact on the database. A standard labeling...http://www.google.com.au/patents/US7134022?utm_source=gb-gplus-sharePatent US7134022 - Multi-level and multi-category data labeling system
