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Let R be the schema of a relation R. and let A, B C R. What is the condition such that *(or (R)) = *

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Let R be the schema of a relation R. and let A, B C R. What is the condition such that *(or (R)) = * (op (TAUB (R))) holds where Fis a correct predict on Re You can express the condition colloquially or in mathematical terms. Let R be the schema of a relation R. and let A, B C R. What is the condition such that *(or (R)) = * (op (TAUB (R))) holds where Fis a correct predict on Re You can express the condition colloquially or in mathematical terms

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