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State true or false: Multiple attributes combined together can be primary keys(a) True(b) FalseThis question was addressed to me in examination.The origin of the question is Entity Relationship Model topic in chapter Database Design and the ER Model of RDBMS |
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Answer» RIGHT choice is (a) True Explanation: A primary KEY is an ATTRIBUTE or a set of attributes that can uniquely identify a tuple in a relation. So, this means that multiple attributes can be combined to uniquely identify a tuple in a relation. |
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