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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.
User-Defined Routines and Data Types Developer's GuideThe HCL OneDB™ User-Defined Routines and Data Types Developer's Guide describes how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.
Extend an operator class
Operator classes
Secondary-access methods
R-tree index

R-tree index

The database server can support the R-tree index for columns that contain spatial data such as maps and diagrams. An R-tree index is most beneficial when queries look for objects that are within other objects or for an object that contains one or more objects.

To use an R-tree index, use the HCL OneDB™ spatial solution or install a third-party DataBlade® module that implements an R-tree index. For more information about R-tree indexes, refer to R-Tree Index User's Guide.

To use an R-tree index, install a third-party DataBlade module that implements an R-tree index. For more information about R-tree indexes, refer to R-Tree Index User's Guide.

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