Consider the following relations: $R_1(A,B,C)$ and $R_2(A,D,E)$
$R_1$ has 1000 records and $R_2$ has 2000 records. The non Null attribute $A$ is $R_2$ is referencing attribute $A$ in $R_1$. Let $X$ be minimum number of records om $R_1$ ⨝ $R_2$ and $Y$ be the maximum number of records in $R_1$⨝$R_2$. The sum of $(X+Y)$ is _______.