Step $1$: Create a set of requirements that will be used to create the ER Diagram in Step $2.$ Step $2$: Create an ER diagram $($using ERDPlus$)$ that contains at least five entities and at least four binary relationships. At least one of the relationships should be many to many. Show all attributes of all entities. Step $3$: Map the ER diagram you created in Step $2$ into a relational schema containing the relations $($with their attributes$)$ and the referential integrity constraints $($i$.$e$.$ arrows pointing from foreign keys into their sources$).$ Use ERDPlus to draw the mapped relational schema.