Creating Routines for User-Defined Data Types

If your repository contains user-defined fields—fields created as user type fields in S/DE Repository—you can write C language routines to manipulate the data in these fields as it’s read from and written to the database.

Introduction to writing C-language routines

Using xfodbcusr.c as a template to create user-defined data routines

Tutorial: Using xfodbcusr.c as an example