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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™.
Write support functions
Perform bulk copies
The stream support functions

The stream support functions

The streamread() and streamwrite() support functions allow the database server to treat opaque data in a stream representation. That is, in a sequential, flattened format. The DataBlade® API provides generic functions that handle the transfer of stream data between the database server and other sites or storage media. The HCL OneDB™ DataBlade API Programmer's Guide provides detailed information about using generic stream functions.

Important: These support functions must be named streamread and streamwrite. The names are not case sensitive.

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