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The relation schemas R1 and R2 form a Lossless join decomposition of R if and only if:(a) R1 ∩ R2 ↠ (R1 – R2)(b) R1 → R2(c) R1 ∩ R2 ↠ (R2 – R1 )(d)(R2 → R1) ∩ R2(A) (a) and (b) happens(B) (a) and (d) happens(C) (a) and (c) happens(D) (b) and (c) happens

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