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Archives of the TeradataForum
Message Posted: Thu, 24 Jan 2002 @ 15:52:18 GMT
Subj: | | Re: Recursive table definitions |
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From: | | Geoffrey Rommel |
| Do any of you use recursive table definitions in Teradata? | |
By "recursive", I assume you mean that some rows contain primary keys that appear as foreign keys in other rows because of a
natural hierarchy (e.g. an employee has a manager who is also an employee). Are you asking (1) do we have tables where that happens to be
true, although the database doesn't know about it, or (2) do we have tables in which that relationship is enforced by Teradata via
REFERENCES constraints?
On my system, the answer to (1) is yes, to (2) no. If you are using Visual Explain, however, the QCD database does have a few tables
with RI constraints -- e.g., statstep.
--wgr
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