At Freshplace Grocery, customers give their purchase to a sales clerk along with cash. The sales clerk enters the sale in a cash register and puts the money in the register drawer. At the end of the day, the sales clerk gives the cash and the register tape to the cashier. The cashier reconciles the cash and the tape to make sure all of the cash is present.

a. Use the above narrative, to prepare a table of entities and activities.

b. Use the table of entities and activities listed in (a) to construct a context diagram, physical data flow diagram and logical data flow diagram.