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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.
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 OneDB™ databases.
DataBlade® Module Development OverviewThese topics serve as an overview of the HCL OneDB™ DataBlade® module development process.The HCL OneDB™ DataBlade® module overview serves as an overview of the HCL OneDB™ DataBlade® module development process.
DataBlade® module concepts
DataBlade® modules and the database serverThis section describes the overall architecture of the HCL OneDB™ database server, how DataBlade® modules affect database server processes, and the application programming interfaces you can use in your DataBlade® modules and client applications.
DataBlade® module programming languages
C++ languageThe OneDB® DataBlade® Developers Kit (DBDK) currently allows you to write opaque data type support routines in C++.

C++ language

The OneDB® DataBlade® Developers Kit (DBDK) currently allows you to write opaque data type support routines in C++.

You can also create ActiveX value objects to represent opaque data types on a client computer. If you want to include other database objects in your DataBlade module, the DataBlade Developers Kit allows you to code them in C or Java™.

The C++ support routines use DataBlade API routines to process opaque data types in the database server. For more information about the DataBlade API, see the HCL OneDB DataBlade API Programmer's Guide.

Important: It is recommended that developers create DataBlade modules in C++ only for client projects and for server projects that use HCL OneDB on Windows™ only.