@radha-BTDzli
•
Oct 21, 2024
Oct 21, 2024
1.5K
what is the logical proof of the below formula for relation?
If I have three relations R1.R2,R3 ,then If I write the formula as
1. (R1^R2)R3 contained in (R1 R3 ^ R2^R3)
2. (R1 UNION R2) R3=R1 R3 UNION R2 R3...