0 votes 0 votes How to identify many to many relationship. Can R2 be one to one. Databases test-series databases relational-model + – Overflow04 asked Nov 29, 2022 Overflow04 334 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Sunnidhya Roy commented Nov 29, 2022 reply Follow Share Many to Many Relationships would not have any arrows at either end. Since R2 relationship doesn't have any such arrows on either end it is a Many to Many Relationship 0 votes 0 votes Overflow04 commented Nov 29, 2022 reply Follow Share @Sunnidhya Roy any reference 0 votes 0 votes Sunnidhya Roy commented Nov 29, 2022 reply Follow Share @GateOverflow04 you can refer to this link The Entity-Relationship Model (juniata.edu), Scroll down to Cardinality of Relationships, there can be various representations for 1 to 1, 1 to Many, Many to Many, some of the popular ones are listed there. 2 votes 2 votes chokostar commented Nov 30, 2022 reply Follow Share Why are min. 4 foreign keys required? 0 votes 0 votes Please log in or register to add a comment.
