{T1,T2,T3} -> Transactions {A,B,C,D,E,F,G} -> Database objects L(x) -> X locking X object. U(x) -> Unlocking X object. R -> Read & W -> Write Can we transform below transaction schedule to serial action plan ? Show with Presedence Graph method. If yes what are the equal serial plans ? (as lock mechanism use Strict-2PL)
{T1,T2,T3} -> Transactions {A,B,C,D,E,F,G} -> Database objects L(x) -> X locking X object. U(x) -> Unlocking X object. R -> Read & W -> Write Can we transform below transaction schedule to serial action plan ? Show with Presedence Graph method. If yes what are the equal serial plans ? (as lock mechanism use Strict-2PL)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
{T1,T2,T3} -> Transactions
{A,B,C,D,E,F,G} ->
L(x) -> X locking X object. U(x) -> Unlocking X object. R -> Read & W -> Write
- Can we transform below transaction schedule to serial action plan ? Show with Presedence Graph method.
- If yes what are the equal serial plans ? (as lock
mechanism use Strict-2PL)
Transcribed Image Text:T1
L(A); R(A);
L(B); R(B);
L(C); R(C);
W(A); U(A);
L(D); R(D);
W(B); U(B);
T2
T3
L(B); R(B);
L(E); R(E);
W(D); U(D);
W(C); U(C);
L(E);
L(F); R(F);
W(F); U(F);
L(G); R(G);
W(E); U(E);
L(E); R(E);
W(G); U(G);
W(B); U(B);
W(E); U(E);
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