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Given the following business rules that describe a bookstore operation and the cardinalities involved, draw a basic Crows Foot ERD that includes cardinalities and visually describes the basic bookstore operational relationships between the business entities.
One student places one-to-many orders.
One order lists one-to-many order-items (books).
One book can be listed in any order items.
A course requires one or more books.
Remember that entities are identified by the nouns in the business rules. Each noun will become an entity. I would highly recommend you watch the video Entity Relationship Modeling in our Weekly Assigned Readings and Videos.Entity Relationship Modeling – YouTube You can also create your ERD using pen and paper, so you don’t need to use a modeling tool. If you do build your ERD using pen and paper make sure your entity’s names and cardinality symbols are easy to read and recognize.
Here is a basic example of a business rule and how this business rule is represented in a Crows Feet Diagram:

(Nieland, 2021)
One customer can have many customer requirements and one customer requirement belongs to only one customer.

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