0 votes 0 votes Participation Constraints can not be represented for a. Unary relationships b. Binary relationships c. Ternary relationships d. None Databases er-diagram relational-model databases + – Arnab Bhadra asked Jun 21, 2017 retagged Aug 5, 2017 by Arjun Arnab Bhadra 1.3k views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply joshi_nitish commented Jun 21, 2017 reply Follow Share a) unary relationship. 0 votes 0 votes junaid ahmad commented Jun 21, 2017 reply Follow Share https://www.dlsweb.rmit.edu.au/toolbox/ecommerce/tbn_respak/tbn_e2/html/tbn_e2_devsol/er_model_relnshps.htm 1 votes 1 votes Arnab Bhadra commented Jun 21, 2017 reply Follow Share @ntitsh Would you please explain? 0 votes 0 votes Please log in or register to add a comment.
1 votes 1 votes i think , answer should be option d)none Niraj Singh 2 answered Jun 21, 2017 Niraj Singh 2 comment Share Follow See all 2 Comments See all 2 2 Comments reply Arnab Bhadra commented Jun 21, 2017 reply Follow Share Would you please explain? 0 votes 0 votes Niraj Singh 2 commented Jun 21, 2017 reply Follow Share participation constraint are of two type : 1) total 2)partial , there is no relationship between type of relationship and participation types . it depends upon cardinality : 1. Minimum Cardinality = 0, for partial participation and equal to 1 for total participation. 2. Minimum Cardinality give partial or total participation. 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes for unary relationship we do not have to represent participation constraints abhishek tiwary answered Jul 1, 2017 abhishek tiwary comment Share Follow See all 0 reply Please log in or register to add a comment.