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A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
geeksforgeeks.org2021年8月18日
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SOLVED: Show how you can specify the following relational algebra operations in both tuple and domain relational calculus.a) A=C(R(A, B, C)) [4]b) (R(A, B, C)) [4]c) R(A, B, C) S(C, D, E) [5]d) R(A, B, C) S(A, B, C) [6]e) R(A, B, C) S(A, B, C) [6]
SOLVED: Show how you can specify the following relational algebra operations in both tuple and domain relational calculus.a) A=C(R(A, B, C)) [4]b) (R(A, B, C)) [4]c) R(A, B, C) S(C, D, E) [5]d) R(A, B, C) S(A, B, C) [6]e) R(A, B, C) S(A, B, C) [6]
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SOLVED:Show how you may specify the following relational algebra operations in both tuple and domain relational calculus. a. σA=C(R(A, B, C)) b. π(R(A, B, C)) c. R(A, B, C) * S(C, D, E) d. R(A, B, C) ∪S(A, B, C) e. R(A, B, C) ∩S(A, B, C) f(A, B, C)-S(A, B, C) g. R(A, B, C) ×S(D, E, F) h. R(A, B) ÷S(A)
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