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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ 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 HCL OneDB™.
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 HCL OneDB™ databases.
User-Defined Routines and Data Types Developer's GuideThe HCL OneDB™ User-Defined Routines and Data Types Developer's Guide describes how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.
Extend the database server
Create user-defined routines

Create user-defined routines

Extending the database server frequently requires that you create UDRs to support the extensions. A routine is a collection of program statements that perform a particular task. A UDR is a routine that you create that can be invoked in an SQL statement, by the database server, or from another UDR.

The HCL OneDB™ database server supports UDRs in the following languages:

Stored Procedure Language (SPL)
The C programming language
The Java™ programming language

If you create applications with Visual Studio 2005, you must embed the manifest in the executables and DLLs.

Use this command to embed a manifest file in a DLL:

mt.exe -manifest manifest_filename -outputresource:dll_name;2

Use this command to embed a manifest file in an executable file:

mt.exe -manifest manifest_filename -outputresource:dll_name;1

For more information about manifests, see the Microsoft™ website.

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