3. The method according to claim 2 , wherein retrieving the deep Web database table comprises receiving multiple Web page documents from the deep Web database table Web site, in response to respective different search queries; automatically extracting and filtering the data elements from the received Web page documents for updating the ontology, based on the different search queries; and presenting the data elements to the user as relational records in the table.
3. The method according to claim 2 , wherein retrieving the deep Web database table comprises receiving multiple Web page documents from the deep Web database table Web site, in response to respective different search queries; automatically extracting and filtering the data elements from the received Web page documents for updating the ontology, based on the different search queries; and presenting the data elements to the user as relational records in the table. 4. The method according to claim 3 , wherein automatically filtering the data elements comprises applying multiple filters to generate multiple, respective relational records for selection by the user, and choosing one of the filters responsively to the selection made by the user.