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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™.
Create an opaque data type
Creating an opaque data type

Creating an opaque data type

About this task

To create an opaque data type, follow these steps:

Create the internal structure for the opaque data type.
Write and register the support functions.
Register the opaque data type in the database with the CREATE OPAQUE TYPE statement.
Provide access to the opaque data type and its support functions with the GRANT statement.
Write any SQL-invoked functions that are needed to support the opaque data type.
Provide any customized secondary-access methods that the opaque data type might need.