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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™.
Improve UDR performance
Parallel UDRs
Executing UDRs in parallel
Execution of a UDR by an index on a UDT column

Execution of a UDR by an index on a UDT column

The database server supports indexing on a UDT column. Therefore, index build, search, and recovery require execution of UDRs that operate on UDT columns.

Currently, the database server does not support fragmentation by expression on UDT columns. As a result, the index built on a UDT column by the database server is not fragmented because index fragmentation makes sense only if the fragmentation is based on expression.

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