0 0 votes S1:1:1, 1:N and N:M relationships are also known as HAS-A relationships. S2:An entity is something that can be identified in the user's work environment; something that the users want to track S1 is true and S2 is false S1 and S2 both are false S1 is false and S2 is true S1 and S2 both are true Databases databases database-normalization + – Prince Sindhiya 498 views answer comment Share Follow Print See 1 comment 1 1 comment reply Shivani gaikawad commented Nov 1, 2018 reply Follow flag Both should be true 0 0 replyShare Please log in or register to add a comment.