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Which of the following statements is TRUE?D1 : The decomposition of the schema R(A, B, C) into R1(A, B) and R2 (A, C) is always lossless.D2 : The decomposition of the schema R(A, B, C, D, E) having AD → B, C → DE, B → AE and AE → C, into R1 (A, B, D) and R2 (A, C, D, E) is lossless.(A) Both D1 and D2(B) Neither D1 nor D2(C) Only D1(D) Only D2 |
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