A system of data storage tables (10A) include an extendable subject table (12) for storing subject UID entries, and an extendable element table (16) for storing UID element entries and aggregate UID entries and role UID entries. The UIDs stored in the tables specify relationships between the UIDs, and...http://www.google.es/patents/US5946688?utm_source=gb-gplus-sharePatente US5946688 - Extendable data storage system and method for storing relationships between UIDs
Extendable data storage system and method for storing relationships between UIDs
