A relation R as shown R(S#,SNAME,SDEPT,DIRECTOR,C#,GRADE) S# SNAME SDEPT DIRECTOR C# GRADE S01 Yang D01 Qin C01 90 S02 Li D01 Qin C01 87 S01 Yang D01 Qin C02 92 S03 Liu D02 Wang C01 95 S04 An D02 Wang C02 78 S05 Tian D03 Lin C01 82 (1) Please write down all the FDs of R (2) Please decompose R to meet BCNF