how is this different than a foreign key?
On Oct 14, 2004, at 11:27 PM, Teng Wang wrote:
> I wanna setup a tree structure. Each node in this tree is a
> table. Each table has a "link" field. For each record, the
> data in this field is a pointer to another table or null.
> I read mysql manual but don't find any clues that SQL
> supports such a "link" field. Does anyone has an idea about
> Thanks a lot!
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