Host variables are variables used to pass the
following information
between an application program
and ALLBASE/SQL:
String truncation indicators.
Bulk processing rows to process.
Messages from the ALLBASE/SQL message catalog.
All host variables used in a C program must be
declared in declaration parts of the program.
The type descriptions of host variables
must be compatible with ALLBASE/SQL data
types. The type descriptions of host
variables must also satisfy certain
preprocessor criteria.
This chapter identifies where in a C
program you can use host variables and then
discusses how to write type descriptions that complement
the way host variables are used.
See the chapter, "Simple Data Manipulation", for a sample program that uses
host variables.
