This section describes how to design and write an opaque
data type.
To create an opaque data type
- Design the opaque data type, including its external and internal
representations.
- Write the opaque-type support functions.
- Take special measures if the opaque type is for multirepresentational
data.
Tip:
The IBM Informix BladeSmith development tool, which is
part of the DataBlade Developer's Kit, automatically generates C source code for the
support routines of an opaque type as well as the SQL statements
to register the opaque type. For more information, see the IBM Informix: DataBlade Developer's Kit User's Guide.