After the requirement collection and analysis phase the software project of a database application about a company is described as follows:

Please use the one to one , one to many , and many to many relationships. similar to the picture below

1. The company is organized into departments. Each department has a name, an unique number, and a particular employee who manages the department. We keep track of the start date when the employee began managing the dept. A dept may have several locations. 2. A dept controls a number of projects, each of which has a name, unique number, and single location. 3. We store each employees name, SSN, address, salary, sex, and DOB. An employee is assigned to one dept but may work on several projects, which are not necessary controlled by the same dept. We keep track of the number of hours per week that an employee works for each project. We also keep track of the direct supervisor of each employee. 4. We want to keep track of the dependents of each employee for insurance purpose. We keep each dependents first name sex, DOB, and relationship to the employee. Draw the E-R diagram by either Dia or MS Visio.

PK ID Serves RRITORY BUSINESS IN Territory Name PK Customer ID PK Product Line ID Product Line Name Customer Address Customer Postal Code Submits Includes PK Order ID Order Date PRODUCT ORDER LINE PK Product ID Product Description Product Finish Product Standard Price Ordered Quantity IN PK Vendor ID Vendor Name Vendor Address Goes Into Quantity RAW MATERIAL WORK SUPPLIES PK Material ID PK Work Center ID