Q. Which of the following systems is responsible for ensuring isolation?

View solution

Q. State true or false: Information residing in the volatile storage does not usually survive system crashes

View solution

Q. A transaction that has not been completed successfully is called as _______

View solution

Q. Which of the following is not a transaction state?

View solution

Q. The execution sequences in concurrency control are termed as ________

View solution

Q. The scheme that controls the interaction between executing transactions is called as _____

View solution

Q. I and J are _________ if they are operations by different transactions on the same data item, and at least one of them is a write operation.

View solution

Q. If a schedule S can be transformed into a schedule S’ by a series of swaps of non-conflicting instructions, then S and S’ are

View solution

Q. A schedule is __________ if it is conflict equivalent to a serial schedule.

View solution

Q. The set of ________ in a precedence graph consists of all the transactions participating in the schedule

View solution

Q. A ___________of the transactions can be obtained by finding a linear order consistent with the partial order of the precedence graph.

View solution

Q. State true or false: If I = read(Q) and J = read(Q) then the order of I and J does not matter.

View solution

Q. State true or false: If I = read(Q) and J = write(Q) then the order of I and J does not matter.

View solution

Q. Which of the following is the most expensive method?

View solution

Q. A transaction that performs only one operation is called as a _________

View solution

Q. The phenomenon in which one failure leads to a series of transaction rollbacks is called as ________

View solution

Q. State true or false: Every cascadeless schedule is also recoverable

View solution

Q. A ___________ is one where, for each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti , the commit operation of Ti appears before the commit operation of Tj

View solution

Q. State true or false: Transactions can only run serially

View solution

Q. Which of the following are the advantages of transaction concurrency?

View solution