Question
Draw an Entity-Relationship Diagram (ERD) for the scenario described in this question. Include all the entities, attributes and relationships described in the scenario in your
Draw an Entity-Relationship Diagram (ERD) for the scenario described in this question. Include all the entities, attributes and relationships described in the scenario in your ERD. You need to show the minimum and maximum cardinality and use a verb to describe each relationship in your ERD. State any reasonable assumptions that you make when drawing your ERD.
Scenario:
Building Supplies has many sales representatives and a few warehouses where it stores building material. To ensure high quality of service, a business rule in Building Supplies is that a sales representative must be assigned to each customer. Sales orders submitted by customers are processed by a sales representative who locates which warehouse the required material is stored and ensures that orders are met within three working days. The order is usually processed by the sales representative assigned to the customer. The selling price for material in an order could vary depending on the customer.
An example of an order is shown below:
Order No: 017321Order Date 15/08/20
Customer No: 0324Customer Name: Best Builders
Sales Rep for Customer: Bobby Bones Staff ID: 089
Sales Rep for Order: Tony Roma Staff ID: 077
Material code
Description
Selling Price ($)
Quantity
Warehouse
Street Address
Warehouse
Suburb
BR129
Brick - Red
6
100
5 Main Way
Belmont
TW129
Tile - White
7
100
6 Side Way
Cockburn
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