Implementation Language

expertGenius the implementation language used for the Genius software is a decision table based programming language that developed from the Filetab reporting tool. Whilst its name has changed over the years, it has, from its earliest days, generated machine specific - optimised - compiled code, for the highest performance. From the logic tables needed to reject records, it grew into a general purpose programming language.

Example

              * an example of decision table logic
              *
              *DETAB Decision.table.name
              C IF   called.decision.table                     Y N N
                IF   Second.table                              - Y N
              A CALL Action1                                   X . . 
                CALL Action2                                   . X .
                REPEAT                                         X X .
                EXIT F                                         . . X 
              

If either "called decision table" or "Second table" returns TRUE, perform a corresponding action, and loop back to perform the tests again. If they both return FALSE then exit with a FALSE status.

There are many problems where it is very convenient to express logic in such decision tables, because it is so much easier to check that all conditions have been covered by the logic.

History

* Fixed Logic

A processing cycle where each record is read from the source, offered to a selection routine, and then if accepted, processed and later printed.