You can use the preprocessor in two modes:
Syntax checking mode, which only checks your SQL syntax.
Full preprocessing mode, which includes SQL syntax checking, creating
compilable output, storing a module in a DBEnvironment, and creating
a file that contains an installable copy of the stored module.
As you develop the SQL portions of your FORTRAN programs, syntax
checking mode is quite useful. Preprocessing is quicker in this
mode than in full preprocessing mode. In addition, you can start
debugging your SQL commands before the DBEnvironment itself is
in place.
How to run the preprocessor in both modes is described later in
this chapter under "Invoking the FORTRAN Preprocessor."
