joining databases

how can i join separate DATABASES?

    select
        a.fld1,b.fld2
    from
        DBfirst.alphaTable  as a,
        DBsecond.bravoTable as b
    where
        a.xyz = b.pdq
    ;

if not possible, what's the procedure for breaking up tables
across various disk drives for speed optimization?

--
It is always hazardous to ask "Why?" in science, but it is often
interesting to do so just the same.
        -- Isaac Asimov, 'The Genetic Code'

will@serensoft.com
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