A reference table has columns associated with data attributes and rows containing related words assigned to those attributes in a collection of data, those words coming from different data tables having independent numbers of records. The stored data include word thesauruses associated with the attributes,...http://www.google.de/patents/US6711563?utm_source=gb-gplus-sharePatent US6711563 - Methods of organizing data and processing queries in a database system, and database system and software product for implementing such methods
