Relational Algebra

verifier · #1 (**permalink**) 10-01-03, 04:25

I got these tables:

Code:

R
-------------
| a | b | c |
-------------
| 1 | 2 | 3 |
| 1 | 1 | 2 |
| 0 | 3 | 2 |
| 1 | 1 | 3 |
| 2 | 1 | 2 |
-------------

S
-------------
| a | b | d |
-------------
| 0 | 1 | 0 |
| 0 | 2 | 1 |
| 2 | 1 | 2 |
| 1 | 2 | 1 |
| 1 | 1 | 4 |
| 1 | 2 | 5 |
| 1 | 2 | 3 |
-------------

What's the cartisian product of the two? It had been clear if the attributes in the tables have had diffrent names. But since they have the same, are those related?