28. A computer system comprised of at least one central processing unit operatively connected to at least one memory device for executing a digitally encoded database query received by the system, said query being comprised of a representation expressed in a semantic query language on the contents of a pre-existing relational database with a corresponding relational database schema, said system comprising: A module adapted to automatically generate a data structure at least partially stored in the at least one memory device representing a mapping of the pre-existing relational database schema from the relational database schema to a synthetic domain model that is a putative ontology automatically created from the relational schema; and A module adapted to automatically translate the received query into a second digitally encoded relational query by using a subset of the contents of the mapping-data structure to determine component substitutions of at least one of the components comprising the received query in order to create the second relational query translation.
28. A computer system comprised of at least one central processing unit operatively connected to at least one memory device for executing a digitally encoded database query received by the system, said query being comprised of a representation expressed in a semantic query language on the contents of a pre-existing relational database with a corresponding relational database schema, said system comprising: A module adapted to automatically generate a data structure at least partially stored in the at least one memory device representing a mapping of the pre-existing relational database schema from the relational database schema to a synthetic domain model that is a putative ontology automatically created from the relational schema; and A module adapted to automatically translate the received query into a second digitally encoded relational query by using a subset of the contents of the mapping-data structure to determine component substitutions of at least one of the components comprising the received query in order to create the second relational query translation. 29. The system of claim 28 further comprising a module adapted to execute the second relational query on the pre-existing relational database and output a result.