1. Name the five determinants of demand (also called “demand-shifters”).

2. Name the five determinants of supply (also called “supply-shifters”).

We plan to develop customer’s database that stores customer’s number (ID), first name, last name and balance. The program will support three operations: (a) reading and loading customer’s info from the text file, (b) entering new customer’s info, (c) looking up existing customer’s info using customer’s number(ID), (d) deleting the customer’s info and (e) the updated database will be stored in the text file after the program terminate.

Customer’s database is an example of a menu-driven program. When the program begins to execute, it first read the text file and upload customer’s info. Then it presents the user with a list of commands. The user can enter as many commands as desired, in any order. The a command prompts the user to enter customer’s number (ID), first name, last name and balance, which are then stored in the program’s database. The f command prompts the user to enter a customer number and then display the corresponding record on the screen. The q command saves the information in the database to the file specified by the user and terminate program.

Based on the project description, please design classes and their corresponding methods. You need describe each method and write API for each method (Leave method body blank) (Hint: you need design one driver class, one database class and one customer record class). Based on your design, please draw the UML diagram as well.

database.txt

12345 Sebastian vanDelden 123.22
11111 Sarah Smith 45.89
22222 Sue Johnson 7765.98
33333 Billy Hunts 374.99

C# (Thank you in advance)

Create an Employee class with five fields: first name, last name, workID, yearStartedWked, and initSalary. It includes constructor(s) and properties to initialize values for all fields.

Create an interface, SalaryCalculate, class that includes two functions: first,CalcYearWorked() function, it takes one parameter (currentyear) and calculates the number of year the worker has been working. The second function, CalcCurSalary() function that calculates the current year salary.

Create a Worker classes that is derived from Employee and SalaryCalculate class.

• In Worker class, it includes two field, nYearWked and curSalary, and constructor(s). It defines the CalcYearWorked() function using (current year – yearStartedWked) and save it in the nYearWked variable. It also defines the CalcCurSalary() function that calculates the current year salary by using initial salary with 3% yearly increment.

Create a Manager class that is derived from Worker class.

• In Manager class, it includes one field: yearPromo and constructor(s). Itincludes a CalcCurSalary function that calculate the current year salary by overriding the base class function using initial salary with 5% yearly increment plus 10% bonus. The manager’s salary calculates in two parts. It calculates as a worker before the year promoted and as a manager after the promotion.

Write an application that reads the workers and managers information from files (“worker.txt” and “manager.txt”) and then creates the dynamic arrays of objects. Prompt the user for current year and display the workers’ and managers’ current information in separate groups: first and last name, ID, the year he/she has been working, and current salary.

**Following is the content of the text files**

________________

manager.txt :

3
Sam
Reza
M000411
1995
51000
2005
Jose
Perez
M000412
1998
55000
2002
Rachel
Pena
M000413
2000
48000
2010

_______________

worker.txt :

5
Hector
Alcoser
A001231
1999
24000
Anna
Alaniz
A001232
2001
34000
Lydia
Bean
A001233
2002
30000
Jorge
Botello
A001234
2005
40000
Pablo
Gonzalez
A001235
2007
35000