Dictionary-described data

 

You can define a program-described or an externally described file with the record format description that is stored in the data dictionary.

You can describe the record format information using the interactive data definition utility (IDDU). Even though the file is program described, IBM^® Query for iSeries™, iSeries Access, and the data file utility (DFU) use the record format description that is stored in the data dictionary.

You can use IDDU to describe and then create a file. The file created is an externally described file. You can also move the file description that is stored in an externally described file into the data dictionary. The system always ensures that the descriptions in the data dictionary and in the externally described file are identical.

 

Parent topic:

How database files are described