Structure and Symbol Definitions
You must write all the code that defines and manipulates your new data types. The header file, IIADD.H, which you can include in your C program, contains the structure and symbol definitions that the DBMS Server requires. IIADD.H is located in the following directories:
Windows: %II_SYSTEM%\ingres\files\iiadd.h
UNIX: $II_SYSTEM/ingres/files/iiadd.h
VMS: II_SYSTEM:[INGRES.FILES]IIADD.H