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1. |
What does the following relational operation perform? |
A. | (E) |
B. | It returns the result of expression E with the previous attribute names |
C. | It returns the result of expression E renaming the attributes as A1, A2, … |
D. | It returns the result of the relation E but saves the old attributes |
Answer» C. It returns the result of expression E renaming the attributes as A1, A2, ‚Äö√Ñ√∂‚àö√묨‚àÇ | |