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Hi Paul, Mike, >Two databases may >use different identifiers for what is in fact the same concept, such as >zip code. A program that wants to compare or combine information across >the two databases has to know that these two terms are being used to >mean the same thing. Isn't that the whole crux of the problem? If the problem is that two databases (or web pages) use a different name for "zip code", the solution is to add a third (Q)name, that both must agree upon? .micah
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