obtaining 3nf achieves the desirable database properties by making the semantics of each field explicit and clear (1nf) and by eliminating database redundancies (2nf and 3nf)
obtaining 3nf achieves the desirable database properties by making the semantics of each field explicit and clear (1nf) and by eliminating database redundancies (2nf and 3nf)
&"a way of structuring the data in a relational database according to formal rules, in order to avoid problems of efficiency and security in accessing and maintain the data.&"