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4- You have been hired to design a database for another version of the Sales Rep world and your first job now is to design an ER model for this database using the following description of that world. i. Database contains information concerning sales representatives, sales areas and products. Each representative has a unique identifier with name, age and salary. Each area is described by a unique identifier with name, city and budget allocated to that area. Each product has a unique identifier with name, product description and price. ii. Each representative is responsible for sales in one or more areas; and has the number of hours and revenue in dollars from sales in each area recorded. iii. Each area has one or more responsible representatives. iv. Similarly, each representative is responsible for sales of one or more products, and has the number of hours and revenue in dollars from sales of each product recorded. Each product has one or more responsible representatives. vi. Every product is sold in every area. V. Design the Entity-Relationship (ER) model diagram for this database