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I was experimenting with creating tables using iSeries Navigator. (It has a pretty good interface. Right click on Schema/new/table.)

I wanted to add a foreign key constraint to an existing file defined with DDS and having a unique key. iSeries Nav would not show the DDS file as being available in the drop down to use as a constraint.

However, if I manually added a primary key constraint to the DDS file from the command line, the DDS file then became available to select for a foreign key in iSeries Nav.

A DSPDBR showed no additional LF had been added so I assume the primary key was using the unique index, but it looks like a unique DDS index is somehow different from a primary key, at least from iSeries Nav’s point of view. (V5R4 version of iSeries Nav.)

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