9. A method as claimed in claim 8, wherein only a selected portion of the data is presented to a user of the method.
9. A method as claimed in claim 8, wherein only a selected portion of the data is presented to a user of the method. 10. A method as claimed in claim 9, wherein an answer set comprising an instruction to create and fill the temporary tables, together with the query and a range of data to be selected from the temporary tables, is stored in a log for later use.