Create an Opaque Data Type

This section describes how to design and write an opaque data type.

To create an opaque data type:

  1. Design the opaque data type, including its external and internal representations.
  2. Write the opaque-type support functions.
  3. Take special measures if the opaque type is for multirepresentational data.
Tip: The HCL Informix® BladeSmith development tool, which is part of the Informix DataBlade Developers Kit (DBDK), automatically generates C source code for the support routines of an opaque type and the SQL statements to register the opaque type. For more information, see the HCL Informix DataBlade Developers Kit User's Guide.
Parent topic: Extend data types
Related reference:
Private header files
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