Sandra Elizabeth González Císaro Héctor Oscar Nigro Architecture for Symbolic Object Warehouse. 648-657 2009 books/igi/Erickson2009 Database Technologies: Concepts, Methodologies, Tools, and Applications http://www.igi-global.com/Bookstore/Chapter.aspx?TitleId=7936 db/books/collections/Erickson2009.html#CisaroN09