0 votes 0 votes For what type of relationships we can't have participant constraints? I mean from unary, binary and ternary relationship is there any that we can't specify a participation constraint. Databases rdbms databases + – V MIDHUN 2 asked Aug 30, 2017 V MIDHUN 2 468 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.