I was looking out in net about how can we determine or find all functional dependencies in a relational database, but didn't find.
So can please anyone here tell me if functional dependecies for each table of a relational database can be found explicitly or we need algorithms for it or any other way? Best regards!
Look for pairs of columns/attributes X and Y (or X may be a set of columns/attrs) where, for every row/tuple having the same value for X, the row/tuple always has the same value for Y. In this situation, for the data you have at least, there would seem to be a relationship where X determines Y and Y depends on X. Use an algorithm that does this looking for pairs. -- Darren Duncan