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1. |
Assume that, in the suppliers relation above, each supplier and each street within a city has a unique name, and (sname, city) forms a candidate key. No other functional dependencies are implied other than those implied by primary and candidate keys. Which one of the following is true about the above schema? |
A. | The schema is in BCNF |
B. | The schema is in 3NF but not in BCNF |
C. | The schema is in 2NF but not in 3NF |
D. | The schema is not in 2NF |
Answer» B. The schema is in 3NF but not in BCNF | |