Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The Load event takes place after the form is displayed on the screen.
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- Create a Windows Forms application. Use the following names for the project andsolution, respectively: Adaline Project and Adaline Solution. Save the application inthe VB2017\Chap08 folder. Create the interface shown in Figure 8-54. The figure alsocontains the major tasks that the application needs to perform. Code the application.Save the solution and then start and test the application.Tasks1). Declare a class-level Integer array to store the sales amounts for the following salespeople.You can create either a two-row, six-column array or a six-row, two-colurnn array.arrow_forward1. Creating Employee Data ( Page 625)Create an application that allows the user to enter the following employee data: First Name, Middle Name, Last Name, Employee Number, Department, Telephone Number, Telephone Extension, and E-mail Address. The valid values for department are Accounting, Administration, Marketing, MIS, and Sales. Once the data is entered, the user should be able to save it to a file. Figure 9-30 shows an example of the application’s form. The form shown in Figure 9-30 has a combo box for selecting the department; a Save Record button, which writes the record to a file; a Clear button, which clears the text boxes; and an Exit button. Write code in the Form_Load event handler that allows the user to enter the name of the file. If the file does not exist, a new one will be created. If the file already exists, the input data will be appended to the file. ******** Make sure to test your project by entering a new text file name, and then to confirm you are appending data to…arrow_forwardIn the receiving procedure’s header, you use the keyword __________to indicate that a variable is being passed by reference.arrow_forward
- A function may return a struct: True Falsearrow_forwardStudent Number, Grade 101029383,90 192736611,10 109800384,0 292833315,80 Complete the function below. If a line is long, you may write it in multiple lines at one blank, but please only write a single statement. def write_final_grades (assignment_grades: Dict, resubmit_grades: Dict, fname: str) -> None: """Write final marks to a final grade file named fname. assignment_grades maps student numbers to grades for the original assignment submission. resubmit_grades maps student numbers to grades for the resubmission of the same assignment. The resubmit penalty of 20% has not been applied within resubmit_grades. The higher mark, after resubmit penalties are applied, is the final mark for a student. Assume that the same student IDs are in both dictionaries. Assuming "grades.txt" is the original grade file shown (on the previous page) and "resubmit.txt" is the file above this function header: >>> original = make_dictionary ("grades.txt") >>> resubmit = make_dictionary ("resubmit.txt") >>>…arrow_forwardInheritance and Polymorphism This assignment starts with the Account class from Labs 4 and 5. Our new and improved bank has two kinds of accounts, savings, and checking. In addition to an ID and a balance, savings accounts have an annual interest rate and a minimum balance. Checking accounts have a minimum balance and a monthly fee. Withdrawals and deposits can be made to both kinds of accounts. At the end of each month, savings accounts pay interest, but only if the account's balance is above the minimum. Also at the end of each month, a fee is deducted from each checking account, but the fee is waived if the account's balance is over the minimum. Tasks 1. Create a complete UML diagram which shows the relationships between the three classes, Account, Savings, and Checking and all of the fields and methods in each. The only modifications required to the Account class is the addition of two abstract methods called closeMonth and accountString. 2. The closeMonth function performs the…arrow_forward
- 3. Which among the following shows a valid use of the Direction enumeration as a parameter to the moveCharacter function? Select al that apply. enum Direction { case north, south, west, east}func moveCharacter(x: Int, y: Int, facing: Direction) {// code here} moveCharacter(x: 0, y: 0, facing: .southwest) moveCharacter(x: 0, y: 0, facing: Direction.north) moveCharacter(x: 0, y: 0, facing: .south) moveCharacter(x: 0, y: 0, facing: Direction.northeast)arrow_forward# Exercise 8: Create a function that takes the sum of three numbers and returns the value # Make sure to use the function and display the result # When you are done, get 3 numbers from a user and then print out the sum using your functionarrow_forwardassign(self, assignment:Assignment) -> AssignmentResult: """ This function is to simulate the process of the student receiving an assignment, then working on the assignment, then submitting the assignment and finally receiving grade for the assignment. This function will receive an assignment then a grade should be calculated using the following formula: grade = 1 - (Student's current energy X Assignment difficulty level). The min grade a student may receive is 0% (0) After the grade is calculated the student's energy should be decreased by percentage difficulty. Example if the student has 80% (.8) energy and the assignment is a difficultly level .2 there final energy should be 64% (.64) = .8 - (.8 * .2). The min energy a student may have is 0% (0) Finally the grade calculated should be stored internally with in this class so it can be retrieved later. Then an Assignment Result object should be created with the student's ID, the assignment…arrow_forward
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