1 votes 1 votes Databases made-easy-test-series databases er-diagram + – charul asked Nov 22, 2017 edited Mar 3, 2019 by adeebafatima1 charul 498 views answer comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Shubhanshu commented Nov 22, 2017 i edited by Shubhanshu Nov 22, 2017 reply Follow Share I think this should be the config Tables are E1R2(A, B,C,D) A IS CK R1(AD) AD IS CK E2R4(DED') D IS CK R3(DFGH) DF IS CK Foreign Keys E1R2.D R1.A R1.D E2R4.D' R3.D No of foreign keys are 5. 1 votes 1 votes yogi_p commented Nov 22, 2017 reply Follow Share Shubhanshu Shouldn't Ans be 5 ) As, E1R2 has D as Foreign key R1 has A & D both as foreign key E2R4 has D' as Foreign key R3 has D as Foreign key 1 votes 1 votes Shubhanshu commented Nov 22, 2017 reply Follow Share Yup, I missed it. 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Minimum 5 foreign Keys are required ankit3009 answered Sep 11, 2020 ankit3009 comment Share Follow See all 0 reply Please log in or register to add a comment.