Question
Consider the following schedule S of transactions T1, T2, T3 and T4. S= R 2 (Y); R 2 (X); C3; W 1 (X); W 2
Consider the following schedule S of transactions T1, T2, T3 and T4.
S= R2(Y); R2(X); C3; W1(X); W2(Y); R2(Z); C2; R4(X); R4(Y); W1(Z); C1; C4;
Find out which of the following statements are true (T) or false (F). Justify your answer.
S is conflict serializable
S is recoverable
S is cascadeless schedule
- i-T, ii-T, iii-F
- i-T, ii-F, iii-F
- i-F, ii-T, iii-T
- i-T, ii-F, iii-T
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Probabilistic Databases
Authors: Dan Suciu, Dan Olteanu, Christopher Re, Christoph Koch
1st Edition
3031007514, 978-3031007514
