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In the given relation Dataset(DatasetID, DatasetName, Source, CollectionDate, Domain, OwnerName, OwnerEmail, UpdateFrequency), the most appropriate primary key is DatasetID. This attribute uniquely identifies each dataset in the relation and ensures entity integrity. Since DatasetID is assumed to be unique for every dataset record, it can _______ _______ _______ _______ _________ __________ ___ ______ ___ ___.
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