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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.
Functional test files

Functional test files

The functional test directory, project\functest, includes the following subdirectories:

Table 1. Functional test files
Subdirectory	Description
cast	Contains a subdirectory that contains functional tests for each cast for which you entered test data.
data	Contains .dat files for each opaque type, user-defined routine, and cast for which you entered test data. The name of the data file is `objectname`.dat, where `objectname` is either the name of the opaque type or the name of the C routine associated with a user-defined routine or cast.
opaque	Contains a subdirectory for each opaque type for which you entered test data. The subdirectory contains functional tests for the support routines defined for the opaque type.
udr	Contains a subdirectory that contains functional tests for each user-defined routine for which you entered test data.

The project\functest directory contains a master shell script, main.sh, for executing all of the functional tests generated for the DataBlade® module. Each subdirectory in the udr, opaque, and cast directories also contains a main.sh script to execute only the functional tests in that subdirectory.