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Designing databasesThe first step in creating a relational database is to construct a data model, which is a precise, complete definition of the data you want to store. After you prepare your data model, you must implement it as a database and tables. To implement your data model, you first select a data type for each column and then you create a database and tables and populate the tables with data. You can also implement fragmentation strategies and control access to your data.
Designing and Implementing a DatabaseThe HCL OneDB™ Database Design and Implementation Guide provides information to help you design, implement, and manage your HCL® OneDB® databases. It includes data models that illustrate different approaches to database design and shows you how to use structured query language (SQL) to implement and manage your databases.
Object-relational databases
Create and use extended data types in HCL OneDB™
HCL OneDB™ data types
Extended data types
User-defined data typesA user-defined data type (UDT) is a data type that is not provided by the database server. You must provide all of the information that the database server requires to manage opaque data types or distinct data types.

User-defined data types

A user-defined data type (UDT) is a data type that is not provided by the database server. You must provide all of the information that the database server requires to manage opaque data types or distinct data types.

HCL OneDB™ supports two categories of user-defined data types, distinct data types and opaque data types.

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