database - 这个关系是BCNF吗(IS this relation BCNF)

Question

R is a relation scheme R={A,B,C,D}.

(R是关系方案R ＝ {A，B，C，D}。)

I have the functional dependencies below: B-->C, AC--> D, ABD--> C, BCD-->A is this relation in BCNF?

(我具有以下功能依赖性：B-> C，AC-> D，ABD-> C，BCD-> A BCNF中的这种关系吗？)

can someone explain?

(有人可以解释吗？)

thanks!

(谢谢！)

  ask by user12463947 translate from so

Answer 1

等待大神答复