Consider the join of a relation R with a relation S. If R has m tuples and S has n tuples. Then the maximum and minimum size of the join respectively are :( ).
A、m+nand0
B、m+nand[m-n]
C、mnand0
D、mnandm+n
发布时间:2024-10-01 05:54:39
A、m+nand0
B、m+nand[m-n]
C、mnand0
D、mnandm+n