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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.
Create DataBlade® objects by using BladeSmithUse BladeSmith to create DataBlade® modules.
Create DataBlade® module objectsBladeSmith uses wizards to create and edit objects.
Create routinesYou can define public or private user-defined routines that support your DataBlade® module. You can specify if the routine is called by SQL or is an internal routine.
Routine behaviorA routine is well-behaved within the context of HCL Informix® database server architecture if it yields the virtual processor on a regular basis to other threads and does not use blocking operating-system calls.

Routine behavior

A routine is well-behaved within the context of HCL Informix® database server architecture if it yields the virtual processor on a regular basis to other threads and does not use blocking operating-system calls.

If your routine violates one of these conditions, mark it as poorly behaved and type the name of a user-defined virtual processor in the user-defined virtual processor class field.

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