0 votes 0 votes In case of 1:1 relationships, when can we have a minimum of 1 table? when both the entities have total participation when atleast one entity have total participation Databases er-diagram er-to-relational + – Syeda97 asked Nov 11, 2018 Syeda97 501 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Harsh Kumar commented Dec 12, 2018 reply Follow Share In both cases. 0 votes 0 votes junaid ahmad commented Dec 12, 2018 reply Follow Share when atleast one of the side have total parrticipation,which includes your first case also 0 votes 0 votes Syeda97 commented Jan 26, 2019 reply Follow Share When there is total participation on only one side, don't we make two tables and add the key of the other table to the table on the total participation side? 0 votes 0 votes Harsh Kumar commented Jan 27, 2019 reply Follow Share When they ask about minimum simply combine all the three - two entities and the relation itself. 0 votes 0 votes Please log in or register to add a comment.