| http://www.w3.org/ns/prov#value | - If the question had said other constraints and indexes", it would have been incorrect.I would not use this question in a job interview (though I might ask the candidate a more open question, e.g. what kind of index will be created to support a PRIMARY KEY constraint, and then engage in dialog until I know whether he does or does not know this - and if he doesn't, that would not be a reason by it
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