A data conversion apparatus and method for translating information stored in a first relational database to that stored in a second relational database, and for translating information in a relational database used by a first selected version of a computer program into information stored in a second...http://www.google.com.au/patents/US5493671?utm_source=gb-gplus-sharePatent US5493671 - Method and apparatus for conversion of database data into a different format on a field by field basis using a table of conversion procedures