Name: Anonymous 2011-11-18 9:53
someone explain to me the difference
theta join = regular cross product
equi join = cross product with a selection operator
natural join = project, select, and cross product (really have no idea about this one)
Inner Join - completely stumps me
any others i'm missing
theta join = regular cross product
equi join = cross product with a selection operator
natural join = project, select, and cross product (really have no idea about this one)
Inner Join - completely stumps me
any others i'm missing