3 votes 3 votes this question is from virtual gate test series. what is the minimum number of RDBMS tables needed for the following er diagram: Databases databases er-to-relational er-diagram + – Manu Thakur asked Sep 17, 2017 Manu Thakur 1.9k views answer comment Share Follow See all 15 Comments See all 15 15 Comments reply Show 12 previous comments Manu Thakur commented Sep 18, 2017 reply Follow Share @bhavna that is correct i aam not denying to it what you posted. but seein the question they used single line for cardinality "many" that is my concern. they didn't frame the question properly! 1 votes 1 votes just_bhavana commented Sep 18, 2017 reply Follow Share Oh got it! they should've used the arrow instead for representing one. 0 votes 0 votes Manu Thakur commented Sep 18, 2017 reply Follow Share yes 0 votes 0 votes Please log in or register to add a comment.
2 votes 2 votes Number of tables for this is 5 Because there should be m:n relationship between Doctor and Patient as well as Doctors and Test So because of m:n relationship 1 extra table for both relation Total = 1+2+2=5 Rishi yadav answered Oct 11, 2017 Rishi yadav comment Share Follow See all 0 reply Please log in or register to add a comment.
