Consider the following classes of schedules: serializable, conflict-serializable, avoids cascading-aborts, and strict. For each of the following schedules, state which of the preceding classes it belongs to. The actions are listed in the order they are scheduled and prefixed with the transaction name. If a commit or abort is not shown, the schedule is incomplete; assume that abort or commit must follow all the listed actions. T1:R(A) T1:W(A) T2:R(A) T2:W(A) T2:R(B) T2:W(B) T2:Commit T1:R(B) T1:W(B) T1:Commit a) Conflict-serializable c) Serializable d) Strict b) Avoid cascading abort T1:R(A) T1:W(A) T2:R(B) T2:W(B) T2:Commit T1:R(B) T1:W(B) T1:Commit c) Serializable d) Strict a) Conflict-serializable b) Avoid cascading abort

Consider the following classes of schedules: serializable, conflict-serializable, avoids cascading-aborts, and strict. For each of the following schedules, state which of the preceding classes it belongs to. The actions are listed in the order they are scheduled and prefixed with the transaction name. If a commit or abort is not shown, the schedule is incomplete; assume that abort or commit must follow all the listed actions. T1:R(A) T1:W(A) T2:R(A) T2:W(A) T2:R(B) T2:W(B) T2:Commit T1:R(B) T1:W(B) T1:Commit a) Conflict-serializable c) Serializable d) Strict b) Avoid cascading abort T1:R(A) T1:W(A) T2:R(B) T2:W(B) T2:Commit T1:R(B) T1:W(B) T1:Commit c) Serializable d) Strict a) Conflict-serializable b) Avoid cascading abort

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter18: Stacks And Queues

Section: Chapter Questions

Problem 18PE

See similar textbooks

Similar questions

Generate use cases based on the folowing scenario. Chillax Video Store (CVS) runs a chain of video rental stores. Before a video can be put on the shelf for rent, it must be catalogued and entered into the video database. Every customer must have a valid CVS customer card in order to rent a video. Customers rent videos for five days at a time. Every time a customer rents a video, the system must ensure that this customer does not have any overdue videos. If so, the overdue videos must be returned and an overdue fee paid before the customer can rent more videos. Likewise, if the customer has returned overdue videos, but has not paid the overdue fee, the fee must be paid before new videos can be rented. Every morning, the store manager prints a report that lists overdue videos. If a video is returned in damaged condition, the manager removes it from the video database and may sometimes charge the customer.
Write a program that support all five scheduling algorithms using Java programming language. Your work should be implemented in object oriented approach. The program must have the following classes; - Process - FCFS - SJF - SRTF - RR - Priority - Main Tips: - A group of two students should complete the assignment. - For each 24-hour late submission, 1 mark penalty counted. - Copying/distribution is strictly prohibited. In such case, both sides will loss marks. - Write necessary constructors and methods for all classes. - The program should have an output as shown in below figure. The result of all scheduling algorithms with their Gantt Chart are printed consecutively. FCFS Scheduling Algorithm Process Arrival Time Burst Time Priority Completion time kaiting time Turn Around Time 8 16 14 22 13 19 Average waiting time - 5.75 Average turn around time - 11.25 santt Chart: P1|P2|P3|P4| SJF Scheduling Algorithm Process Arrival Time Burst Time Priority Completion time kaiting time Turn Around…
Compliant/Noncompliant Solutions The following code segment was provided in Secure Coding Guidelines for Java SE: void readData() throws IOException{ BufferedReader br = new BufferedReader(new InputStreamReader( new FileInputStream("file"))); // Read from the file String data = br.readLine();} The code is presented as a noncompliant coding example. For this assignment, identify two compliant solutions that can be utilized to ensure the protection of sensitive data. Provide a detailed explanation of factors, which influence noncompliant code and specifically how your solutions are now compliant. Your explanation should be 2-3 pages in length. Submit the following components: Word document with appropriate program analysis for your compliant solutions and source code in the Word file. Submit your .java source code file(s). If more than 1 file, submit a zip file.
Consider a computer system with multiple resources and concurrent processes competing for them. Deadlock is a situation that might arise in such a system. What conditions must hold simultaneously for a deadlock to occur in this system? A. Mutual Exclusion, Hold and Wait, No Preemption, Circular Wait B. Mutual Exclusion, First Come First Serve, Circular Wait, Limited Resources C. Mutual Exclusion, Hold and Wait, Priority Inheritance, Circular Wait D. Hold and Wait, No Preemption, Circular Wait, Resource Optimization
Every company having customers maintains customer accounts and supports a complete life cycle of the account from its creation until it is closed. There are differences in what are the stages (states) in the account's life cycle, and what are conditions or events causing account to change its state.For the user account to be created, it has to meet some initial requirements. For example, user id (used as a login name) must be unique, at least for the existing accounts. After account was created, it might need to be verified. Verification depends on the company and could include e-mail, phone, and/or address verification. If account was not verified during some predefined period of time, that account could be moved to the suspended accounts. New, active, or suspended accounts could be cancelled at any time by client's request. Note, the precondition for this usually includes payment of any outstanding balances, and might require some separate account state or substate to handle this…
Create a UML class diagram for the following problem: In a garage, there may be several vehicles. The vehicles can be of 2 types: car, or motorcycle. For a car we store its brand, type, and cubic capacity. In case of motorcycle we store its brand, type, cubic capacity, and year of manufacture. Upload Choose a File
Language:C++ Give the definition of a class named Product whose objects are records for ane-commerce system. A Product record has the product’s ID, Name, Description and Price. Besure your class has wrapper (get & set) methods for all member variables, 2 public membermethods named ‘calculateBill’ and ‘printProductDetail’ and at least 1 private memberfunction with meaningful implementation. Declare the object of Product class in mainfunctions and use all its member variables and methods.
Q1. Consider the following system: A school wants to automate their attendance taking. Attendance will be taken via a web interface. Each teacher can log in to the system and see a list of elasses they are teaching. The teacher can choose one of those classes and be presented with a list of students who are enrolled in that class. The teacher can then set the attendance status of the students (present/absent) and submit the form, which should update the attendance record of the class for that time. Students can log in and check their attendance record on a per class basis. Only the assigned- teacher or the principal can give attendance for a class. In case the assigned-teacher is absent, the principal must first assign another teacher for the class for that particular day. The temporary-assigned-teacher can then take attendance for the class, only for that day. The system must record this event for cases of attendance record dispute. A teacher may be the assigned teacher of more than…
Using the scenario of Object oriented programming Q1 Write a program that defines a class with a data member to holds a “serial number” for each object created from the class. That is, the first object created will be numbered 1, the second 2, and so on. To do this, you’ll need another data member that records a count of how many objects have been created so far. (This member should apply to the class as a whole; not to individual objects. What keyword specifies this?) Then, as each object is created, its constructor can examine this count member variable to determine the appropriate serial number for the new object. Add a member function that permits an object to report its own serial number. Then write a main() program that creates three objects and queries each about its serial number. They should respond I am object number 2, and so on.
Exercise An educational institute wishes to maintain a database of it's employees. The database is divided into number of classes whose hierarchical relationships are shown in the diagram. The diagram also shows the minimum information required for each class. Specify all the classes and define methods to create the database and retrieve individual information as and when required. Develop a Java program for this scenario and ZIP all the classes in to a single file rename it with your index number and duly upload it in to the LMS teacher subject class regular basicSalary staff code name typist speed Diagram officer grade casual dailyWages
Suppose you are required to design a rental car system for a shop in which different cars are given to different customers on specified rent in daily basis. You have to keep the records of customers and cars. Now the shop has multiple cars and customers. The customers have two types one is member and the other is new customer. The customers have some operations as add customer which add the details of the customer in the system, view customer which prints the details of the customer and is valid which checks whether the NIC is given or not. The internal details of is valid operation only is kept hidden with the help of abstraction. The details of customers are name, contact, NIC, address and balance. The car has four types Honda, Toyota, Suzuki and Daihatsu. The common operations of car are add car which add the details of car in the system, view car which prints the details of the car, issue car which updates the car detail (available = false) that car is given on rent and is…
IN JAVA, DO THESE INTERFACES IN POINT AND LINE CLASSES