Method and apparatus for processing electronic data

The present invention relates to a method and apparatus for processing electronic data, and in particular, to a method and apparatus for assisting a user to map different descriptions of stored electronic data, or ontologies or data schema, to one another to render considerably easier the process of enabling computers to process stored electronic data stored on different heterogeneous databases according to correspondingly different methodologies. In particular, it relates to a method of generating a mapping from a global ontology to a plurality of databases and/or database tables to enable queries rendered using the global ontology to be answered using data stored in the database tables.