3 votes 3 votes In the solution they have merged E1 R4 E4 , E2 R3 E3 R5 , R6 E5. MY DOUBT IS , why cant we only merge R4 E4 instead of E1 R4 E4. since there is total participation on the E4 side of the relation and it would also decrease the number of attributes . Databases databases er-diagram er-to-relational rdbms made-easy-test-series + – shaurya vardhan asked Dec 4, 2017 • edited Mar 7, 2019 by Aditi Singh shaurya vardhan 1.2k views answer comment Share Follow See all 9 Comments See all 9 9 Comments reply Show 6 previous comments Ashwin Kulkarni commented Dec 4, 2017 reply Follow Share the total participation should be on both sides then we can merge it to one. otherwise some tuples will remain null. 0 votes 0 votes Anu007 commented Dec 4, 2017 reply Follow Share with one to one from E1 to E2 and total participation from E2 side merge E2 RE1 with key at E1 side try this with small example 1 votes 1 votes Mahmooda Khatoon commented Jan 30, 2018 reply Follow Share If '' 1;1 with total participation can be merged in one table only '', Then what about the m;n relation with one side total participation...plz explain 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes 5 tables neelesh bhakt answered Jan 31, 2018 neelesh bhakt comment Share Follow See 1 comment See all 1 1 comment reply Chandrabhan Vishwa 1 commented Nov 4, 2018 reply Follow Share in this case how many table 0 votes 0 votes Please log in or register to add a comment.
