Give an example of a schedule produced by a read-only multiversion concurrency control in which the read/write transactions serialize in commit order while the read-only transactions serialize in a different order.
What will be an ideal response?
r1(x) w2(y) w3(z ) commit3 commit2 r1(y) commit1
T1 does not see the newvalue of y written by T2 and hence serializes before T2 even
though it commits later.
Computer Science & Information Technology
You might also like to view...
In the formula, Required:2^[SqFt], what does the ^ represent?
A) Exponentiation B) Multiplication C) Integer division D) An expression
Computer Science & Information Technology
The contents of query datasheet are permanent. ____________________
Answer the following statement true (T) or false (F)
Computer Science & Information Technology
A recurrence ____________________ schedules an appointment at regular intervals.
Fill in the blank(s) with the appropriate word(s).
Computer Science & Information Technology
Like traditional arrays, indexes of ArrayList objects are ____________.
Fill in the blank(s) with the appropriate word(s).
Computer Science & Information Technology