1 votes 1 votes Considering binary relationships, possible cardinality ratios are: one:one $1:N$ $M:N$ All the options Unknown Category nielit-scb-2020 + – gatecse asked Dec 9, 2020 edited Dec 12, 2020 by soujanyareddy13 gatecse 507 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes A binary relation is not a binary operation (groups, monoids). A binary relation on X and Y, is simply a subset of $X \times Y$. A binary operation on X is a mapping from $ X \times X \rightarrow X $. So any of the first 3 options are possible. Joey answered Dec 20, 2020 Joey comment Share Follow See all 0 reply Please log in or register to add a comment.