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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.
Managing databases
Grant and limit access to your database
Grant privileges
Database-level privileges
Database-administrator privilegeThe highest level of database privilege is database administrator, or DBA. When you create a database, you are automatically the DBA.

Database-administrator privilege

The highest level of database privilege is database administrator, or DBA. When you create a database, you are automatically the DBA.

Holders of the DBA privilege can perform the following functions:

Execute the DROP DATABASE, START DATABASE, and ROLLFORWARD DATABASE statements.
Drop or alter any object regardless of who owns it.
Create tables, views, and indexes to be owned by other users.
Grant database privileges, including the DBA privilege, to another user.

Only the user informix can modify system catalog tables directly. If you are user informix, strongly recommends that you not modify the contents or schema of any system catalog table, because such actions can affect the integrity of the database.

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