Splitting Right Sides of FD's X->A,A2...A holds for R exactly when each of X->A1,X->A2,...,X->A hold for R. Example:A->BC is equivalent to A->B and A->C. ● There is no splitting rule for left sides. We'll generally express FD's with singleton right sides 77 Splitting Right Sides of FD’s z X->A1A2…An holds for R exactly when each of X->A1, X->A2,…, X->An hold for R. z Example: A->BC is equivalent to A->B and A->C. z There is no splitting rule for left sides. z We’ll generally express FD’s with singleton right sides