Develop an extended entity$-$relationship diagram $($EERD$)$ that illustrates the relational database design described by the business rules in #$1.$ The diagram should include the primary key of each table in order to demonstrate correct implementation of specialization$-$generalization. While EERDs may well contain other attributes, in this assignment you need not include them because they are not described in the business rules. You should use legal database identifiers such

as Sit$\_$Down$\_$Restaurants or Food$\_$Manufacturers in your EERD.