$1.$ Draw an ER$-$MODEL using the following business rules. ER$-$Model relates entities.

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$2.$ Using your ER$-$Model above, draw an ERD with primary keys and foreign keys based on the relationships in your ER$-$Model. You should have $4$ entities here. Break the many to many relationships between employees and projects. Refer to Books and Authors in our database.

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$3.$ Draw an ERD using the following business rules. ERD relates entities with attributes. The attributes can be found in the business rules. Note if you make any assumptions.