I want this UML diagram to be mapped in C# code <>Transaction- Transaction Datetime : DateTime- Transaction Type : string. ----------------+ Transaction(type:string, dt:DateTime)+ GetTransactionDatetime() : DateTime+ GetTransactionType() : string+ ToString() : stringDropTransactionJoinTransactionLeaveTransaction- taxiNum : inttaxiNum : inttaxiNum : intrankld : int+ JoinTransaction(- priceWasPaid : bool- rankld : int--------------------------------+ DropTransaction(destination : stringagreedPrice : double--- ----------------transactionDatetime:DateTime,taxiNum:int,transactionDatetime:DateTime,taxiNum:int,rankld:int)+ LeaveTransaction(transactionDatetime:Date Time,rankld:int,t:Taxi)priceWasPaid:bool)+ ToString() : string+ ToString() : string+ ToString() : string

To get started, make associate degree empty C# console application in Visual Studio. For additional…

<> Transaction Transaction Datetime : DateTime - TransactionType : string + Transaction(type:string, dt:DateTime) + GetTransactionDatetime() : DateTime + GetTransactionType() : string + ToString() : string DropTransaction JoinTransaction LeaveTransaction - taxiNum : int - rankld : int destination : string - agreedPrice : double + LeaveTransaction( - taxiNum : int - taxiNum : int - priceWasPaid : bool + DropTransaction( - rankld : int + JoinTransaction( -- - - - ------------. transactionDatetime:DateTime, taxiNum:int, transactionDatetime:DateTime, taxiNum:int, priceWasPaid:bool) rankld:int) + ToString() : string transactionDatetime:DateTime, + ToString() : string rankld:int, t:Taxi) + ToString() : string

<> Transaction Transaction Datetime : DateTime - TransactionType : string + Transaction(type:string, dt:DateTime) + GetTransactionDatetime() : DateTime + GetTransactionType() : string + ToString() : string DropTransaction JoinTransaction LeaveTransaction - taxiNum : int - rankld : int destination : string - agreedPrice : double + LeaveTransaction( - taxiNum : int - taxiNum : int - priceWasPaid : bool + DropTransaction( - rankld : int + JoinTransaction( -- - - - ------------. transactionDatetime:DateTime, taxiNum:int, transactionDatetime:DateTime, taxiNum:int, priceWasPaid:bool) rankld:int) + ToString() : string transactionDatetime:DateTime, + ToString() : string rankld:int, t:Taxi) + ToString() : string

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter7: File Handling And Applications

Section: Chapter Questions

Problem 6PE

See similar textbooks

Similar questions

Saira owns a small business and she frequently makes transactions. Sometimes she makes payments and other times payments are credited in her account. One of her customer Tania purchased a product and credited payment while another payment by Saira was in progress. Now the sequence of transaction is as follows:1. Tania’s account read amount in saira’s account2. Saira’s account read amount in saira’s account3. Tania added Rs. 500/- in original amount (that was lets suppose Rs. 60,000/ 4. Saira’s account subtracted Rs. 2000/- that she debited in someone else’s account form the original amount (that was Rs. 60,000) 5. Tania’s account committed the transaction 6. Saira’s account committed the transaction Draw the above-mentioned sequence in form of a table and see if there is a problem. What this problem is called and how can we avoid such kind of problem? Propose some solutions (at least two) and then explain which one is better and why?
(Transaction Management) Each branch of the Jaja restaurant has a mainstay menu that is very popular with customers, so information on the availability of the number of servings is needed to be able to serve orders. Here are two transactions that are ordering a food menu at the same time. T1: Start the transaction at time t1, read 10 servings of food stock at t2. Because ordering one portion, the stock is reduced by 1 at t3. On t6, update the stock count, and commit to t7. T2: Transaction T2 starts a transaction on t2, reads the number of stocks in t3 as many as 10. At t4 orders 3 portions. On t5 it updates the stock to 7 and then on t6 commits it. As a result of the T1 and T2 transactions above, there was an error in the amount of food stocks. Make a solution with 2PL. What kinds of problems happened? Give a reason why choosing this type of problem! How much food is still available?
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.
Point of sales systemcreate a POS in java that will have the basic operation of a point of sales System.your system should provide the following:1. a login frame to allow the employee to login2. cash register sales3. items scanning when a client bring the product4. real time stock level5. stock infosl (product codes ,and informartion such as price and quantity)6. sales reportall the product must be stored in a SQL database using necessary security.Note:1. Use GUI to make the application2. Do not use any builder to drag and drop component
1. PHP Programming for DB connection a. To connect to a database with a php program, given the hostname is “localhost”, username is “ericwei”, password is “bmccu”, db_name is “db350” what is the database connection statement in php if the returning value assigned to a variable $dbc? b. If the returning value of database connection statement is assigned to $dbc, what is the statement to execute a database selection statement “SELECT * FROM Customer;” for a returning variable of $r? c. If there are more than one records returned from the server, what is the PHP statement to loop through all the records and print out the column of first_name on the client side? (10 pts) d. Normally where you store the database connection php file? Why? (5 pts)
MongoDB 1) The customers collection includes documents that have accounts as a field that contains an array of values. Write a statement to retrieve a cursor containing all documents where there is only one account. 2) Write a statement that returns only the email addresses of all customer documents. 3) Write a statement to retrieve a cursor containing all customer documents where the active field within the main document (i.e., do not worry about nested documents) is set to true. 4) Write a statement to retrieve a cursor containing all customer documents that do not have the active field within the main document (i.e., do not worry about nested documents). (Hint: Take a look at the Query and Projection operators in the MongoDB documentation to find an operator that helps determine whether a field exists within a document.)
What characteristics of an application make it easier to scale with a key-value store, and what characteristics make it impossible?
calculate_new_balance Given a starting balance (a number), and a list of transaction tuples, calculate the final balance for an account. Transaction tuples are of the shape ("description", amount, "withdrawal") , or ("description", amount, "deposit"). The last entry in the tuple will be either "withdrawal" or "deposit". Every withdrawal decreases the balance of the account by the specified amount, and every deposit increases the balance. The return value is the new account balance, as a number. (which could be negative) Sample calls should look like: >>> calculate_new_balance(100, [("payday", 20, "deposit"), ("new shoes", 50, "withdrawal"), ("illicit winnings", 200, "deposit")])270>>> calculate_new_balance(100, [])100
school has 100 lockers and 100 students. All lockers areclosed on the first day of school. As the students enter, the first student, denotedas S1, opens every locker. Then the second student, S2, begins with the secondlocker, denoted as L2, and closes every other locker. Student S3 begins with thethird locker and changes every third locker (closes it if it was open and opens it ifit was closed). Student S4 begins with locker L4 and changes every fourth locker.Student S5 starts with L5 and changes every fifth locker, and so on, until studentS100 changes L100.After all the students have passed through the building and changed the lockers,which lockers are open? Write a program to find your answer and display all openlocker numbers separated by exactly one space.
Transactions frequently take a very long time to finish when an optimistic approach to concurrency control is used. Explain.
The screen shown is used to enter the sales of the products into the sales and salesdetails tables. It utilizes the four depicted files ProductDAO.java, Product.java, PosDAO.java and Pos.java. The schema for the database is also depicted. The java code utilizes a jconnector to retrieve data from the database. When a product code is entered and then a quantity is entered, on the enter key pressed, the product code is sent to the getProduct(String ID) of a ProductDAO object and that function connects to the database and retrieves the data, placing it into a Product object and return this as Product object so that it can be placed into the Jtable of the PosGUI screen. Write the code for the getProduct(String ID) function located in the ProductDAO file. The code is equivalent to the prodid.
Open your text editor and create a new document named model.php model.php will connect to a database potentially return PDO statement objects to the controller for processing. This question is complete and requires use of initMessagesfunction initMessages($tim) This method will take a single parameter of unix time using the method “time()”. It will conditionally select fromthe table “messages” the minimum id and rename it to “min_id”. The condition is that the field time is greater thanthe parameter for time. The return is the PDOStatement object with the row data from a query.