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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.
Spatial Data User's GuideThe HCL OneDB™ Spatial Data User's Guide contains information to assist you in using the HCL® OneDB® spatial extension. The HCL® OneDB® spatial extension adds custom data types and supporting routines to the server.
R-tree indexesAn index organizes access to data so that entries can be found quickly, without searching every row. The R-tree access method enables you to index multidimensional objects.
How spatial operators use R-tree indexesAfter you have created an index, it is considered by the query optimizer for any supported combination of argument types.

How spatial operators use R-tree indexes

After you have created an index, it is considered by the query optimizer for any supported combination of argument types.

The index can be used regardless of whether the indexed column is the first or second argument. An operator with two parameters—also known as a binary operator—can take advantage of an index defined on a column that serves as one of its arguments.