A Guide To Understanding Database Dependencies
Database dependencies often confuse both students and database professionals alike. Fortunately, they are not as complicated as they may seem. They can best be explained using a few examples. Here, we’ll examine common database dependency types. Database Dependencies and Functional Dependencies Saying that there is a dependency between attributes in a table is the same as saying that there is a functional dependency between those attributes. If there is a dependency in a database such that attribute B is dependent upon attribute A, you would write this as:...