Use a relational DBMS to implement the integrated REA data model presented in this chapter, or one of the integrated data models from the homework problems, or a model provided by your instructor.

Joe's is a small ice-cream shop located near the local university's baseball field. Joe's serves walk-in customers only. The shop carries 26 flavors of ice cream. Customers can buy cones, sundaes, or shakes. When a customer pays for an individual purchase, a sales transaction usually includes just one item. When a customer pays for a family or group purchase, however, a single sales transaction includes many different items. All sales must be paid for at the time the ice cream is served. Joe's maintains several banking accounts but deposits all sales receipts into its main checking account.

Then, perform the following tasks:

1.Write a query to calculate total accounts receivable.

2.Writing a query to calculate accounts receivable for a specific customer.

3.Creating a sales invoice form that references the appropriate tables and inputs data about attributes into the proper tables.

4.Write queries to calculate as many financial statement items as possible from the data model you implement.

5.Design appropriate input controls to ensure the validity of data entered in the form created in step 3.