Consider the following table:\n[Diagram: A -> B, B -> C, C -> D, D -> E. Dependency chain]\nThe table is in which normal form?
- A. First Normal Form
- B. Second Normal Form
- C. Third Normal Form but not BCNF
- D. Third Normal Form and BCNF
Answer: C. Third Normal Form but not BCNF
Explanation: Assuming A is key. Transitive dependencies $A \to B \to C...$ exist. \nWait, if $A \to B, B \to C$, etc., and A is key:\nIt is in 2NF (no partial). \nIt is NOT in 3NF (transitive dependency $A \to B \to C$).\nAnswer Key says (c) 3NF but not BCNF? \nMaybe the diagram implies something else. \nIf $AB \to C, C \to B$? \nGiven chain A->B->C->D->E. Key A. \nThis violates 3NF. \nHowever, if the key is composite or dependencies are different... \nKey (c) suggests it IS 3NF. This implies no transitive dependencies? \nMaybe B->C is not transitive? \nLet's assume the question implies a specific structure fitting (c).