The steps in creating a FORTRAN application program that
accesses an ALLBASE/SQL DBEnvironment are
summarized in Figure 1-1 “Creating an ALLBASE/SQL FORTRAN Application Program”.
Figure 1-1 Creating an ALLBASE/SQL FORTRAN Application Program
![[Creating an ALLBASE/SQL FORTRAN Application Program]](img/xf0101.gif)
Using your favorite editor, create FORTRAN source
code. The source code is a compilable FORTRAN program or
subprogram that contains SQL commands. The SQL commands
contained within the FORTRAN program are said to be embedded. Refer to the ALLBASE/SQL Reference Manual for SQL terminology and
usage rules.
Before compiling the source code, it must be preprocessed
using the ALLBASE/SQL FORTRAN preprocessor. The
FORTRAN preprocessor:
Checks the syntax of the SQL commands.
Stores a module in the system catalog of the DBEnvironment to be accessed at runtime. A module consists of
ALLBASE/SQL instructions for executing SQL commands in your program.
Creates an installable module file. This file
contains a copy of the module stored in the DBEnvironment at preprocessing time. This file can be used to install the
module into another DBEnvironment so that the application program can be run in that DBEnvironment.
Generates FORTRAN statements for executing the SQL commands
and comments out the SQL commands. Non-SQL statements are
ignored. This modified version of your source code is placed
into a file created by the preprocessor, referred to as a modified source code file.
Creates one include file, which contains type
declarations and initialization of variables used by the
preprocessor generated FORTRAN statements.
The FORTRAN compiler and system
linker are used to create the executable program
from the modified source code file and the include file. The
executable program automatically makes the appropriate database
accesses at runtime in DBEnvironments where the related module
is stored.
