HP 3000 Manuals

DBChange Plus User's Guide

Adding a Detail Data Set 

Adding a detail data set is the same as adding a master data set except
that the key item parameter is not used for a detail data set.  To add a
search item to a detail data set, use the ADD PATH command, which is
discussed in chapter 6, "Changing Paths in a Detail Data Set."

MPE/iX 5.0 Documentation