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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.
Create DataBlade® objects by using BladeSmithUse BladeSmith to create DataBlade® modules.
Add SQL filesUse BladeSmith to add custom SQL commands to the scripts that describe a DataBlade® module and its objects. You can include SQL commands to create tables, indexes, or SPL procedures your DataBlade® module requires.
Object dependenciesYou can specify whether an SQL command depends upon a DataBlade® module object or upon your SQL. These dependencies determine the sequence of SQL commands in the generated objects.sql script.

Object dependencies

You can specify whether an SQL command depends upon a DataBlade® module object or upon your SQL. These dependencies determine the sequence of SQL commands in the generated objects.sql script.

BladeSmith generates SQL in the following sequence:

SQL commands to create objects upon which custom SQL commands depend
Custom SQL commands
SQL commands to create objects that depend upon custom SQL commands

The generated SQL scripts register dependencies when the DataBlade module is registered in a database.