0 votes 0 votes Is every relation in an ER model one to one ? prashantt144 asked Mar 27, 2018 prashantt144 213 views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply Devshree Dubey commented Mar 27, 2018 reply Follow Share No not necessarily true. It depends. The relation could be in the following form: 1)One-to-One 2)One-to-Many 3)Many-to-One 4)Many-to-Many Depends on the relationship that exists between entities. 2 votes 2 votes prashantt144 commented Mar 27, 2018 reply Follow Share thanks for the clarification. 0 votes 0 votes Devshree Dubey commented Mar 27, 2018 reply Follow Share It is my pleasure. :) 0 votes 0 votes Please log in or register to add a comment.