The DDS for a subfile consists of two record formats: a subfile record format and a subfile control record format.
The subfile record format contains the field descriptions for the records in the subfile. Specifications of the subfile record format on a READ, WRITE, or REWRITE causes the specified subfile record to be processed, but does not directly affect the displayed data.
Specification of the subfile control record format on a READ or WRITE statement causes the physical read, write, or setup operations of a subfile to take place. Figure 141 shows an example of the DDS for a subfile record format and a subfile control record format.
For a description of how the records in a subfile can be displayed and for a description of the keywords that can be specified for a subfile, refer to the Database and File Systems category in the iSeries 400 Information Center at this Web site -http://publib.boulder.ibm.com/pubs/html/as400/infocenter.htm.
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