Which of the following concurrency control protocols ensures conflict serializability and avoids cascading rollbacks, but does NOT…
A relation is in Third Normal Form (3NF) if and only if for every non-trivial functional dependency X -> Y:
A dense index on a database file contains:
Given relations R(A, B) and S(B, C), which of the following is equivalent to the set difference operation R - S (assuming R and S …
A directed graph where vertices represent active transactions and directed edges (Ti -> Tj) represent that Ti is waiting for a res…
Lossless-join decomposition of a relational schema R into R1 and R2 is guaranteed if and only if:
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