Minimal cover of functional F dependency set is

1. AF′ = {A → B, A → C, BC → D, D → E}
2. BF′ = {A → BC, B → D, D → E}
3. CF′ = {A → B, A → C, A → D, D → E}
4. DF′ = {A → B, A → C, B → D, C → D, D → E}

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: A. F′ = {A → B, A → C, BC → D, D → E}

Explanation

Split A → BC into A → B and A → C. A → D follows from A → BC and BC → D, so drop it.