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If T1 and T2 are two relations, then which of the following is not a valid relational algebra expression ?

Question

If T1 and T2 are two relations, then which of the following is not a valid relational algebra expression ?

A T1 - T2

B T1 ∪ T2

C T1 ∩ T2

D All are valid expressions

Answer & Explanation
Option: [D]

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