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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. Informix® includes many built-in extensions that are fully integrated in the database server. Informix® also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for Informix®.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
User-Defined Routines and Data Types Developer's GuideThese topics describe how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.The HCL OneDB™ User-Defined Routines and Data Types Developer's Guide describes how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.
Improve UDR performance
Extend UPDATE STATISTICS
Support functions for UPDATE STATISTICS
Example of user-defined statistics functions

Example of user-defined statistics functions

For examples of statprint() and statcollect() functions written in C, refer to the \%INFORMIXDIR\dbdk\examples\Types\dapi\Statistics\Box\src\c directory, after you install the OneDB® DataBlade® Developers Kit (DBDK).