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If a table column has is UNIQUE and has NOT NULL, is it
equivalent to a PRIMARY KEY column?

Answer Posted / eshwari

ur question is not clear.

if ur saying that ur giving unique and not null constraints
to the same column then u can make it as primary key.it
internally supports clustered index also.

if ur saying that ur giving unique and not null constraints
to different columns then u cant make them as primary key
individually.
coz primary key means unique + notnull + clustered index

Is This Answer Correct ?    2 Yes 1 No



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