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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™.
HCL OneDB™ extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Database Extensions User's GuideThe HCL OneDB™ Database Extensions User's Guide explains how to use the database extensions that come with HCL OneDB™: Large Object Locator, MQ messaging, binary data types, basic text search, node data type, HCL OneDB™ web feature service for Geospatial Data, and SQL packages.
Hierarchical data typeThe node data type helps to resolve a difficult relational database problem–transitive closure.
The node data type for querying hierarchical dataThe node data type is an opaque type of variable length up to 256 characters.

The node data type for querying hierarchical data

The node data type is an opaque type of variable length up to 256 characters.

The Scheduler must be running in the database server. If the Scheduler is not running when you create a node data type, a message that the data type is not found is returned.

The database that contains the node data types must meet the following requirements:

The database must be logged.
The database must not be defined as an ANSI database.

If you attempt to create a node data type in an unlogged or ANSI database, the message DataBlade registration failed is printed in the database server message log.

Operations involving Enterprise Replication are supported.

Deep copy and LIKE matching statements are not supported.