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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.
DBDK InfoShelfThe DataBlade® Developers Kit InfoShelf is designed to help you work with BladeSmith.
DataBlade® Developers Kit TutorialThe Tutorial is a set of exercises that demonstrate how to create extensions to HCL Informix® and package them as DataBlade® modules by using DBDK. Support for DataBlade Developers Kit (DBDK) is removed starting Informix Server 14.10.xC6.
Tutorial exercise 5: Using interfacesThis exercise demonstrates how to use interfaces to define how one DataBlade® module depends on another. This exercise has 16 steps. It takes approximately one hour to complete
Creating the Distance() function in the Point DataBlade® module

Creating the Distance() function in the Point DataBlade module

About this task

To create the Distance() function:

Procedure

Choose Edit > Insert > Routine, type the following information in the New Routine wizard, and leave all other fields in the wizard as their default value.
Routine Property Value
Routine Name (SQL) double-precision
Arguments

Name: Pnt1, Type: Point

Name: Pnt2, Type: Point
Click Finish and then choose Project > Save to save your project.

Routine Property	Value
Routine Name (SQL)	double-precision
Arguments	Name: Pnt1, Type: Point Name: Pnt2, Type: Point

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