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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 GuideThese topics describe how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.The 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™.
A user-defined routine
Tasks that you can perform with user-defined routines
Support user-defined data types

Support user-defined data types

When you create UDTs, you also provide the following routines:

Support functions that the database server invokes implicitly to operate on the data types
Cast functions that the database server can invoke implicitly or that users can specify explicitly in SQL statements to convert data from one data type to another
Optional operator-class functions that extend an index method, such as B-tree or R-tree, to manage the new type
Optional additional routines that other support functions or the end user can call