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  3. August 2007

Re: Entity Relationship Diagramming Tools


Chuck wrote: "Primary keys are not simply unique keys from the DDS created
file . . ."

Regarding unique keys of DDS-described physical files: I know that unique
keys don't on their own have primary key contraints associated with them
(unless specified with the "add constraint" cmds you mentioned). But I
think they are candidates for primary keys, and it would be nice to have an
option to specify them as primary keys. Some tools don't even reverse
engineer the unique keys as unique keys, just as regular fields.

Where can I get info regarding where the unique key specifier, and
relationships between logical and physical are stored in QSYS (QADB
catalog)?

Thanks.

*******************
Linda J. Jahn
Russell A. Farrow Limited



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