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Designing databases
The 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 Database
The 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
Other predefined data types

Designing databases
The 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 Database
  The 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.

Other predefined data types

With the exception of BLOB, BOOLEAN, BSON, CLOB, JSON, and LVARCHAR, the predefined data types usually do not appear as data types for the columns of a table. Instead, the following predefined data types are used with the functions associated with complex and user-defined data types and user-defined routines:

clientbinval
ifx_lo_spec
ifx_lo_stat
impexp
impexpbin
indexkeyarray
lolist
pointer
rtnparamtypes
selfuncargs
sendrecv
stat
stream
xid

For more information about these predefined data types, see Informix® User-Defined Routines and Data Types Developer's Guide.