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Extending Informix®Beyond standard relational database objects, HCL Informix® 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 Informix® databases.
DataBlade® Developers KitThe DataBlade® Developers Kit (DBDK) guides contain information about the tools you can use to develop and package DataBlade® modules, which extend the functionality of HCL Informix® databases.
DataBlade® Developers Kit User's GuideThe HCL Informix® DataBlade® Developers Kit User's Guide describes how to use tools to develop and package DataBlade® modules.
Getting started with DataBlade® module developmentThis section provides an overview of DataBlade® module development and describes the resources and tools the HCL Informix® database server provides to facilitate development.
Prepare to develop DataBlade® modulesThis section suggests how to prepare for developing DataBlade® modules. This overview is intended to act as a map for information resources.
Design your DataBlade® moduleDataBlade® modules can contain complex operations. A good design is critical to your success.
Programming resources

Programming resources

The following table lists the programming language options you have when writing DataBlade® module code and refers you to sources of information about them.

Table 1. Programming language options and resources
Language	Information sources
C	Programming DataBlade module routines in C Informix® DataBlade API Programmer's Guide
ActiveX/C++ (client-side programming and Windows™ server projects only)	Create ActiveX value objects The ActiveX value objects Informix DataBlade API Programmer's Guide
Java™	Programming DataBlade modules in Java J/Foundation Developer's Guide Informix JDBC Driver Programmer's Guide
Stored Procedure Language (SPL)	Informix Guide to SQL: Tutorial

For specific language options and guidelines, see Programming guidelines.

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