State the purpose of the checkpoint mechanism. How often should checkpoints be performed? How does the frequency of checkpoints affect. a. System performance when no failure occurs
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The following table has two attributes A and C where A is the primary key and C is the foreign key referencing A with on-delete cascade. A C —– 2 4 3 4 4 3 5 2 7 2 9 5 6 4 The set of all tuples that must be additionally deleted to preserve referential integrity when ...
Two transactions T1 and T2 are given as: T1: r1(X) w1(X)r1(Y)w1(Y) T2 : r2(Y)w2(Y)r2(Z)w2(Z) where ri(V) denotes a read operation by transaction Ti on a variable V and wi(V) denotes a write operation by transaction Ti on a variable V. Calculate The total number ...
Write a program to insert values in a table at run time using JDBC.
Create a package which contains function to ask the user to enter the student’s marks and determine the GRADE according to the following criteria. >90 A >80AND <90 B >70AND <80 C >60 AND<70 D <60 F
Problem 29: Election day It’s almost election day and the election officials need a program to help tally election results. There are two candidates for office—Polly Tichen and Ernest Orator. The program’s job is to take as input the number ...