Home
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.
Programming guidelinesUse this section to help you when you write the design specification for your DataBlade® module.
Programming language optionsThis section explains the programming language options you have when you use BladeSmith to generate source code for your DataBlade® module.
Options for opaque data types
Embed opaque data types within opaque data typesYou can embed an existing opaque data type as a member of another opaque data type with BladeSmith only if both opaque data types have the same server implementation language. You cannot mix programming languages in opaque data types.

Embed opaque data types within opaque data types

You can embed an existing opaque data type as a member of another opaque data type with BladeSmith only if both opaque data types have the same server implementation language. You cannot mix programming languages in opaque data types.