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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 Informix® Database Design and Implementation Guide provides information to help you design, implement, and manage your Informix® 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 Informix®
HCL Informix® data types
Fundamental or atomic data types

Fundamental or atomic data types

All Informix® database servers support the fundamental, or atomic, data types. These types are fundamental because they are the smallest units that you can specify in a SELECT statement. Only HCL Informix supports extended and predefined data types. The predefined data types are in a separate category because they share certain characteristics with extended data types but are provided by the database server.

For an explanation of the fundamental data types, see Select data types.

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