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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.
Run parallel queriesRunning queries in parallel distributes the work for one aspect of a query among several processors and can dramatically improve performance.
Execute parallel queriesTo run queries in parallel, you must use the HCL OneDB™ parallel database query (PDQ) feature.

Execute parallel queries

To run queries in parallel, you must use the HCL OneDB™ parallel database query (PDQ) feature.

To take full advantage of the performance enhancement PDQ provides, you need to use fragmented tables; table fragmentation allows you to store parts of a table on different disks.

See the HCL OneDB Performance Guide for information about these topics. The HCL OneDB Performance Guide contains topics that describe how the database server executes queries in parallel and how you can manage running queries in parallel; it also includes topics that describe how to work with fragmented tables.

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