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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.
Managing databases
Table fragmentation strategies
What is fragmentation?
Why use fragmentation?

Why use fragmentation?

Consider fragmenting your tables if improving at least one of the following is your goal:

Single-user response time
Concurrency
Availability
Backup-and-restore characteristics
Loading of data

Each of the preceding goals has its own implications for the fragmentation strategy that you ultimately implement. Your primary fragmentation goal determines, or at least influences, how you implement your fragmentation strategy. When you decide whether to use fragmentation to meet any of the preceding goals, keep in mind that fragmentation requires some additional administration and monitoring activity.

For more information about the preceding goals and how to plan a fragmentation strategy, see your HCL OneDB™ Performance Guide.

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