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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 2: Creating distinct data types and castsThis exercise demonstrates how to create distinct data types and the casts that convert them. This exercise consists of 14 steps. It takes approximately one hour to complete.
Creating the error message raised if a user enters a temperature lower than absolute zero

Creating the error message raised if a user enters a temperature lower than absolute zero

About this task

To create the error message:

Procedure

Choose Edit > Insert > Error and type the following information in the New Error wizard.

Error property Mercury error value

SQL Error Code UMRC0

Error Locale en_us.1252

Register message as... Both

SQL error text Temperatures cannot go below absolute zero.
Click Finish and choose Project > Save to save your project.

Error property	Mercury error value
SQL Error Code	UMRC0
Error Locale	en_us.1252
Register message as...	Both
SQL error text	Temperatures cannot go below absolute zero.

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