A method for mapping an X500 data model onto a relational database (RDB) comprises the steps of building object classes, each comprising a list of its attributes, building attributes, each comprising its type, building a static directory information tree (SDIT), comprising only static distinguished names...http://www.google.de/patents/US8166075?utm_source=gb-gplus-sharePatent US8166075 - Method for mapping an X500 data model onto a relational database