19
Natural Join
•
Given the schemas R(A, B, C, D), S(A, C, E),
what is the schema of R
⋈
S ?
•
•
Given R(A, B, C),
S(D, E), what is R
⋈
S
?
•
•
Given R(A, B),
S(A, B),
what is
R
⋈
S
?