Setting up physical files

 

A physical file is a description of how data is to be presented to or received from a program and how data is actually stored in the database. A physical file contains one record format and one or more members. You can create and describe a physical file using the traditional system interface.

• Creating a physical file
  You can create a physical file using data description specifications (DDS).

• Specifying physical file and member attributes
  You can specify the attributes of physical files and members on the Create Physical File (CRTPF), Create Source Physical File (CRTSRCPF), Change Physical File (CHGPF), Change Source Physical File (CHGSRCPF), Add Physical File Member (ADDPFM), and Change Physical File Member (CHGPFM) commands.

• Implicit physical file journaling
  A physical file can be journaled automatically when it is created.

 

Parent topic:

Creating and describing database files

 

Related concepts

Describing access paths for database files

 

Related reference

Example: Describing a physical file using DDS