This topic provides an overview of the process of creating database
files, libraries, source files, and physical files.
The system supports several methods for describing and creating a database
file:
- Interactive data definition utility (IDDU)
You can create a database
file by using IDDU, part of the WebSphere® Development Studio for iSeries™ licensed
program. If you are using IDDU to describe your database files, you might
also consider using it to create your files.
- Control language (CL), using source entry utility (SEU) or data file utility
(DFU) to specify data description specifications (DDS).
You can create
a database file by using CL. The CL database file create commands are: Create
Physical File (CRTPF), Create Logical File (CRTLF), and Create Source Physical
File (CRTSRCPF). After a database file is created, you can use SEU or DFU
to describe data in the file. SEU and DFU are part of IBM® WebSphere Development Studio for iSeries licensed
program. These topics focus on how to create files using these methods.
- Structured Query Language (SQL)
You can create and describe a database
file (table) by using SQL statements. SQL is the IBM relational database language, and can
be used on iSeries to interactively
describe and create database files.
- iSeries Navigator
You
can also create a database file (table) using iSeries Navigator.