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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® Module Development OverviewThe HCL Informix® DataBlade® module overview serves as an overview of the HCL Informix® DataBlade® module development process.
DataBlade® module concepts
DataBlade® modules and the database serverThis section describes the overall architecture of the HCL Informix® database server, how DataBlade® modules affect database server processes, and the application programming interfaces you can use in your DataBlade® modules and client applications.
Internal architecture of the database serverIf you want to add user-defined routines to your HCL Informix® database server, you must understand the internal architecture of the database server and how DataBlade® module routines can affect the database system.

Internal architecture of the database server

If you want to add user-defined routines to your HCL Informix® database server, you must understand the internal architecture of the database server and how DataBlade® module routines can affect the database system.

The following aspects of the internal architecture of your Informix database server are affected the most by DataBlade modules:

Virtual processors
Memory management
Java™ virtual machine

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