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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.
Syntax for creating an R-tree indexTo use the R-tree access method, you create an index on a column of a spatial type.
Verify that the index is correctly builtTo verify whether an index was successfully built, use the oncheck utility.

Verify that the index is correctly built

To verify whether an index was successfully built, use the oncheck utility.

The output from oncheck for a successfully built index starts as shown:

WARNING: index check requires a s-lock on tables whose lock level is page. 
Information for Partition num: 1049006 
Node: Level 0, Pagenum 32, Usage 55.7%, No. of Children 11, right -1

Refer to your HCL OneDB™ Administrator's Guide for information about using the oncheck utility.

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