Assume the following locking schedule for transactions T1, T2, T3, and T4 that utilizes multiple granularity...
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Assume the following locking schedule for transactions T1, T2, T3, and T4 that utilizes multiple granularity locks (Figure 1) and assume that no locks are released within the given timeframe. [ 1.5 Marks] TI X(A) T2 SIX(B) IS(C) IS(D) T3 IX(C) IS(B) T4 IS(A) IS(B) IX(D) SIX(C) IS ✓ IX S IS IX X ✓ ✓ SIX ✓ X ✓ x x x S ✓ X > x X SIX X ✓ X X x Figure 1. Schedule S Figure 2: Compatibility matrix a. Using the locking compatibility matrix in figure 2, draw the wait-for graph for the schedule S (Figure 1). b. Does the schedule lead to deadlock? If yes, list the transaction/s that could be aborted to resolve the deadlock. Assume the following locking schedule for transactions T1, T2, T3, and T4 that utilizes multiple granularity locks (Figure 1) and assume that no locks are released within the given timeframe. [ 1.5 Marks] TI X(A) T2 SIX(B) IS(C) IS(D) T3 IX(C) IS(B) T4 IS(A) IS(B) IX(D) SIX(C) IS ✓ IX S IS IX X ✓ ✓ SIX ✓ X ✓ x x x S ✓ X > x X SIX X ✓ X X x Figure 1. Schedule S Figure 2: Compatibility matrix a. Using the locking compatibility matrix in figure 2, draw the wait-for graph for the schedule S (Figure 1). b. Does the schedule lead to deadlock? If yes, list the transaction/s that could be aborted to resolve the deadlock.
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The image displays a locking schedule for transactions T1 T2 T3 and T4 with various granularity locks and a lock compatibility matrix You are being as... View the full answer
Related Book For
Fundamentals of Database Systems
ISBN: 978-0136086208
6th edition
Authors: Ramez Elmasri, Shamkant Navathe
Posted Date:
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