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Chapter 6 Normalization

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Why is it the case<br />

The latter could happen since OfficeID itself<br />

is only part of the key, thus the same value<br />

of OfficeID occurs with different values of the<br />

other part of the key, i.e., ClientID.<br />

AcctNumber ClientId OfficeId<br />

A057 1111 BS32<br />

A908 1234 MN08<br />

B123 1111 SB01<br />

B123 2222 SB01<br />

B123 3333 SB01<br />

Then, the relationship between AcctNumber and<br />

OfficeID has to be repeated, which is redundant.<br />

36

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