The transactions T and U at the server are defined as follows:
T: x= read (i); write(j, 44);
U: write(i, 55);write(j, 66);
Initial values of ai and aj are 10 and 20. Which of the following interleavings are serially equivalent and which could occur with two-phase locking?
a) serially equivalent but not with two-phase locking.
b) serially equivalent and with two-phase locking.
c) serially equivalent and with two-phase locking.
d) serially equivalent but not with two-phase locking.
Computer Science & Information Technology
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