Question: Explain two-phased locking.

Explain two-phased locking.

Step by Step Solution

★★★★★

3.43 Rating (169 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

Transactions are allowed to obtain locks as nece... View full answer

blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Database Processing Fundamentals Questions!

Q:

SQL supports four isolation-levels and two access-modes, for a total of eight combinations of isolation-level and access-mode. Each combination implicitly defines a class of transactions; the...

Q:

Explain in a paragraph why a phased conversion would be used to install the computer system.

Q:

For each of the following protocols, describe aspects of practical applications that would lead you to suggest using the protocol, and aspects that would suggest not using the protocol: Two-phase...

Q:

i) Explain two-phased locking. ii) Why would two-phase locking not be an appropriate concurrency control scheme for indexes? Discuss a more appropriate locking scheme for tree-based indexes.

Q:

Valid Locking Schedule Write a function, named validate _ locking _ schedule that takes a list of Actions ( see below ) as its only parameter. This function doesn t return anything, but instead...

Q:

Valid Locking Schedule Write a function, named validate _ locking _ schedule that takes a list of Actions ( see below ) as its only parameter. This function doesn t return anything, but instead...

Q:

Strict Two-Phased Locking What is the benefit to enforcing strict two-phased locking? O Makes cascading rollbacks impossible. O Allows for dirty reads. O Increased transaction throughput

Q:

Valid Locking Schedule Write a function, named validate _ locking _ schedule that takes a list of Actions ( see below ) as its only parameter. This function doesn t return anything, but instead...

Q:

Briefly explain the strategy of two - phased locking.

Q:

: MCQs and True / False i . Locks that are placed assuming that a conflict will never occur are called _ _ _ _ _ _ _ _ . A ) explicit locks B ) implicit locks C ) optimistic locks D ) pessimistic...

Q:

For many years, Johnny Carson was the star of a well-known television show, The Tonight Show. For about twenty years, he was introduced nightly on the show with the phrase, "Here's Johnny!" A large...

Q:

Surveyed data results are shown below. Write a C# program using nested loop to calculate and display for each data list, the lowest and highest data. Data Cluster Sample A Sample B Sample C Sample D...

Q:

Question 2 What is the main reason that RSA is a secure encryption system? In other words, if a public ( encryption ) key ( n , e ) is available, why is it difficult to find the decryption key? It is...

Q:

=+11. A firms short-run revenue is given by R = 10e - e2 ,

Q:

Write a short recursive Java method that rearranges an array of integer values so that all the even values appear before all the odd values.

Q:

Write a short recursive Java method that takes a character string s and outputs its reverse. For example, the reverse of 'pots&pans' would be 'snap&stop'.

Q:

Al says he can prove that all sheep in a flock are the same color: Base case: One sheep. It is clearly the same color as itself. Induction step: A flock of n sheep. Take a sheep, a, out. The...

Q:

Holt Enterprises recently paid a dividend, Do, of $1.00. It expects to have nonconstant growth of 13% for 2 years followed by a constant rate of 7% thereafter. The firm's required return is 9%. a....

Q:

9. Consider the following data for a primary care practice that provides two types of services, A and B. Activity Check-in Assessment Diagnosis Treatment Check-out Billing Total Annual Costs $...

Q:

Assume that your parents wanted to have $ 1 6 0 , 0 0 0 saved for university by your 1 8 th birthday and they started saving on your first birthday. They saved the same amount each year on your...