Suppose that the system crashes before the [write_item, T 2 , D, 25, 26] entry is written
Question:
Suppose that the system crashes before the [write_item, T2, D, 25, 26] entry is written to the log in Figure 22.1(b). Will that make any difference in the recovery process?
Figure 22.1(b)
Transcribed Image Text:
(b) A BCD 30 15 40 20 [start_transaction, T3] [read_item, T3,C] [write_item, T3.B,15,12] [start_transaction, T2) 12 [read_item, T2,B] [write_item, T2,B,12,18] 18 [start_transaction, T;] [read_item, TA] [read_item, T,D] [write_item,T,D,20,25] 25 [read_item, T2, D] [write_item, T2,D,25,26] 26 [read_item, T3 A] System crash
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 66% (12 reviews)
When the system cashes before the transaction T2 performs a write operation on item D There will be ...View the full answer
Answered By
Douglas Jeremiah
I am a professional tutor with five years experience in tutoring,my approach is Lerner centered and my focus is mainly for the learner to get what am teaching,I offer one on one sessions
0.00
0 Reviews
10+ Question Solved
Related Book For
Fundamentals Of Database Systems
ISBN: 9780133970777
7th Edition
Authors: Ramez Elmasri, Shamkant Navathe
Question Posted:
Students also viewed these Computer science questions
-
Suppose that the system crashes before the [read_item, T 3 , A] entry is written to the log in Figure 22.1(b). Will that make any difference in the recovery process? Figure 22.1(b) (b) A BCD 30 15 40...
-
Assuming that a system distinguishes between four types of resources (A, B, C, and D), the following is an example of how those resources could be distributed. Identify whether the system is in safe...
-
To counter terrorism, a new portable explosive detection system is developed. (a) Suppose that the system will be installed in an airport where only 1 out of one million baggage may contain...
-
Assume that everything is the same for the project except the marginal tax rate is now 35%. What is the new NPV? Assume that the cost per unit can be decreased to $12 by using cheaper raw materials...
-
How do family members attempt to resolve conflict over purchase decisions?
-
What role does the financial system play in promoting economic growth?
-
Perform the operations and express the result in rectangular form. \(\frac{\left(\frac{2}{3}+\frac{1}{2} j ight)^{4}}{\left(1+\frac{3}{4} j ight)\left(-1+\frac{1}{3} j ight)}\)
-
The quality-control manager of a Long John Silvers restaurant wishes to analyze the length of time that a car spends at the drive-through window waiting for an order. According to records obtained...
-
Soil samples from three locations were tested for modulus of subgrade reaction. Data thus collected is shown below. Pressure, kPa 7 Settlement, mm Location 1 Location 2 Location 3 0 0 1.25 0.854 1.79...
-
When transferring data from RAM to a network interface, pinning a page can be used, but suppose that system calls to pin and unpin pages each take 1 sec. Copying takes 5 bytes/nsec using DMA but 20...
-
Discuss how disaster recovery from catastrophic failures is handled.
-
When a failure occurs, the log is consulted and each operation is either undone or redone. This is a problem because a. Searching the entire log is time consuming b. Many redos are unnecessary c....
-
Can you think of a physical means of separating hydrogen from oxygen in a sample of pure water, H 2 O?
-
Why is it important to go through the process of closing, even for projects that are terminated early?
-
Should activities on the critical path be outsourced? Why or why not?
-
If your sponsor asks for an estimate as to how much more money your team needs to complete all project work as scheduled, which of the following formulas might you use? a. BAC 2 EAC b. EV/PV c. (BAC...
-
What does a typical closeout report include?
-
What marks the transition between the planning and executing project phases?
-
Write a simple TCP program for a server that accepts lines of input from a client and prints the lines onto the server's standard output. (You can do this by modifying the TCPServer java program in...
-
Assume Eq. 6-14 gives the drag force on a pilot plus ejection seat just after they are ejected from a plane traveling horizontally at 1300 km/h. Assume also that the mass of the seat is equal to the...
-
Distinguish between a link and a channel in multiplexing.
-
Show the contents of the five output frames for a synchronous TDM multiplexer that combines four sources sending the following characters. Note that the characters are sent in the same order that...
-
Repeat Problem 6-4 if each output slot carries 2 bits from each source. Problem 6-4 We need to use synchronous TDM and combine 20 digital sources, each of 100 Kbps. Each output slot carries 1 bit...
-
The price gouging statute imposes an effective price ceiling on necessary commodity duties in emergencies; legally, retailers cannot raise prices by a significant amount. When a natural disaster...
-
How is the economic model presented above concerning job growth useful to businesses and others? U.S. monthly job growth 4M 214K 251K 0 -4M -8M -12M -16M -20M JAN -1.4M 2.7M 4.8M 1.8M 1.5M 661K...
-
Problem-based learning (PBL) is broken down into 3 phases: understanding the problem, exploring the available information, and resolving the problem. Each phase includes a series of steps, as...
Study smarter with the SolutionInn App