1 votes 1 votes In definition of transitive dependency we use conditions as A → B It is not the case that B → A B → C I am not able to understand why we need condition 2 for this ? Databases databases database-normalization + – Rameesh asked Nov 6, 2018 Rameesh 1.2k views answer comment Share Follow See all 17 Comments See all 17 17 Comments reply Show 14 previous comments Shaik Masthan commented Nov 23, 2018 reply Follow Share the question saying, B -> A, B -> C then A ---> C is not transitive. 0 votes 0 votes Gurdeep Saini commented Nov 23, 2018 reply Follow Share @shaik but the question is A → B, It is not the case that B → A ,B → C then A->C transitive dependency now my question is what is the need of not B->A 0 votes 0 votes Shaik Masthan commented Nov 23, 2018 reply Follow Share his meaning, A --> B but it is not B--> A , B --> C 0 votes 0 votes Please log in or register to add a comment.