An apparatus for and method of utilizing service requests to a legacy data base management system to efficiently access external data types. To accomplish this, the external data types are dynamically mapped into data types compatible with the legacy data base management system. ...http://www.google.de/patents/US20050262155?utm_source=gb-gplus-sharePatent US20050262155 - Method and apparatus for mapping data types from heterogeneous databases into a single set of data types