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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® Developers Kit User's GuideThe HCL OneDB™ DataBlade® Developers Kit Users Guide describes how to use OneDB® DataBlade® Developers Kit (DBDK) tools to develop and package DataBlade® modules.
AppendixesThis section contains additional reference information.
Source files generated for DataBlade® modulesYou can use the tables in this section to find a brief description of the types of files BladeSmith generates for your DataBlade® project.
ActiveX/C++ source code files
Client project filesFor each project, BladeSmith generates client-specific support library files and project files.
Support library files

Support library files

For each project, BladeSmith generates the following client-specific support library files. Do not modify these files.

Table 1. Support library files
File name	Description
DkClient.cpp	Client-specific support library functions
DkIntf.h	Support library header file that defines the ActiveX value object custom interfaces (IRawObjectAccess and ITDkValue)
DkIntf_i.c	Support library file that contains IIDs (interface identifiers) for interfaces defined in DkIntf.h
DkIntfImpl.h	Support library C++ template implementations for custom interfaces defined in DkIntf.h

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