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What is the best way to represent the attributes in a large database?

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What is the best way to represent the attributes in a large database? (a) Relational-and (b) Concatenation (c) Dot representation (d) All of the mentioned This question was addressed to me by my school teacher while I was bunking the class. The doubt is from Database Design Process in portion Normalization of Database Management

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Correct option is (b) Concatenation To explain: Example inst sec and student sec.

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