2 votes 2 votes Is minimal set of functional dependency for a functional dependency set is always unique??? Databases databases decomposition lossless-join database-normalization + – gatecrack asked Dec 10, 2018 reopened Dec 10, 2018 by Lakshman Bhaiya gatecrack 581 views answer comment Share Follow See 1 comment See all 1 1 comment reply Lakshman Bhaiya commented Dec 10, 2018 reply Follow Share Not always unique. 1 votes 1 votes Please log in or register to add a comment.
0 votes 0 votes A - B B - C C - A Select any 2 twin_123 answered Dec 10, 2018 twin_123 comment Share Follow See all 3 Comments See all 3 3 Comments reply Lakshman Bhaiya commented Dec 10, 2018 reply Follow Share @ twin_123 can you explain more clearly when you write the answer try to write everything, otherwise you write in the comment section ok? 0 votes 0 votes Lakshman Bhaiya commented Dec 10, 2018 i edited by Lakshman Bhaiya Dec 10, 2018 reply Follow Share @gatecrack why you select this is the best answer? please remove it? 0 votes 0 votes Lakshman Bhaiya commented Dec 10, 2018 reply Follow Share $"$Is canonical cover(minimal set) always unique for any relationship$"?$ this is counterexample Given FD's X→YZ Y→XZ Z→XY https://stackoverflow.com/questions/34332781/is-canonical-cover-always-unique-for-any-relationship 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Minimal Set may not be unique always. Consider this R(ABC) with FD:{ A→ B,B→ C,C→ A, B→ A, C→ B, A→ C} By solving we can get 2 minimal sets M1: A→ B, B→ C. C→ A M2: B→ A, C→ B, A→ C Varun Raj Akula answered Mar 12, 2022 Varun Raj Akula comment Share Follow See all 0 reply Please log in or register to add a comment.