Question: Consider the schedule S1 consists of three transactions T1, T2, T3 as the following: T1 R(B) R(D) Commit S1 T2 R(B) W(B) R(D) commit

Consider the schedule S1 consists of three transactions T1, T2, T3 as

Consider the schedule S1 consists of three transactions T1, T2, T3 as the following: T1 R(B) R(D) Commit S1 T2 R(B) W(B) R(D) commit T3 R(A) R(C) commit Answer the following question: a) Is the schedule S1 cascadeless and recoverable? Justify your answer. b) Draw the precedence graph of schedule S1 c) Is S1 conflict-serializable? Explain briefly. If S1 is conflict-serializable, write down all equivalent serial schedules.

Step by Step Solution

★★★★★

3.33 Rating (162 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

SOLUTION a The schedule S1 is not cascadeless because transaction T1 read... View full answer

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 Programming Questions!

Cabana Cruise Line offers cruise ship service to various tropical locations throughout the globe. The company is considering the addition of a new cruise ship to its fleet in order to expand service...

4. Given A= 5.0,0,45,B= 3.0,0 = 270, determine the magnitude and direction of vector C given C=A+B. Show your work. 5. Consider y = y + Voyt - gt. a. Rearrange the expression to look like the...

Using the following information, please answer the questions about Sure lock Homes, a start-up company. In your analysis, assume the valuation date is the end of year 6, projected earnings in year 6...

Matching socks. Consider the following question posed to Marilyn vos Savant in her weekly newspaper column, Ask Marilyn: I have two pairs of argyle socks, and they look nearly identical one navy blue...

Locate the 2007 financial statements for The Walt Disney Company on the Internet. Once you have located those financial statements, consider the following question. From Disneys foreign currency...

Consider the following backup scheme: Day 1: Copy to a backup medium all files from the disk. Day 2: Copy to another medium all files changed since day 1. Day 3: Copy to another medium all files...

Consider the following two transactions: T1: read (A); read (B); if A = 0then B: = B + 1; write (B). T2: read (B); read (A); if B = 0 then A: = A + 1; write (A). Let the consistency requirement be A...

Consider the following January transactions for Shine King Cleaning: Jan 1 Performed cleaning services for Debbies D-list for $8,000 on terms 3/10, n/20. 3 Shine King decides to adopt the allowance...

Consider the following three companies: (i) Gasco owns and operates a chain of gas stations in the northeast United States. (ii) Fuelco is a prerevenue company that is attempting to develop new fuel...

Multiple Choice Questions Identify the best answer for each of the following: 1. Generally accepted government auditing standards are issued by the a. Office of Management and Budget. b. Government...

Relationships between social equity and public budgeting and finance

Why is Python's integration capability important in the software quality assurance and testing domain? Python's integration capability is not relevant in the software quality assurance and testing...

The binary: 10101010 is equivalent to _______ in decimal. 2. Write the following IPv6 address in the shortest possible format: 2001:0DE0:0000:DFE0:0000:000F:0000:0001 3. You have given the network IP...

Nagkamali Inc. adds materials at the start of the process in Department B. Units received from Department A costs P11.10 while in Department B, unit costs for materials and conversion costs were P1...

Recall the Five-Component of Information Systems. Can you identify each component that contact tracing needs to make it work? You need to think beyond the application and carefully examine each...

1. A 75 kg skier starts with an initial speed of 2 m/s down a 40 m high ramp. They launch off a ramp that is 8 m above the ground. (a) Determine the skier's velocity when launching off the ramp. (b)...

4.5. Given the following product tree, explode, offset, and determine the gross and net requirements. All lead times are 1 week, and the quantities required are shown in parentheses. The master...

In what normal form is the LOTS relation schema in Figure 14.12(a) with respect to the restrictive interpretations of normal form that take only the primary key into account? Would it be in the same...

What are probabilistic and semantic models of IR?

State the general form of a spatial association rule. Give an example of a spatial association rule.

Louiselle purchased a motor home for $9000 down, with the balance to be paid by 60 monthly payments of $1176.40 including interest at 6% compounded monthly. a. What was the purchase price of the...

Assume that your client invests $1000 at the end of each of the next three years. The investments earn 8% compounded annually. What is the future value at the end of the three years?

Calculate and rank the equivalent values eight years from now of the following cash flow streams: (i) A single payment of $5000 today. (ii) An ordinary annuity starting today with eight annual...