Kim Burke is the owner and operator of a small flower shop, Kim's Flowers. She has
decided to develop a database system to track her sales, inventory, accounts receivable
and cash receipts. This system is used for large orders that are arranged in advance.
However, she does not have time to do the development herself. Therefore, she has hired
you to design and implement the system for her. She describes the requirements of her
system as follows:
Whenever a customer comes in to place an order, a sales clerk enters a Sales Order
directly into the computer system. The sales order lists all of the floral inventory items
the customer wishes to purchase. The clerk then prints the sales order and gives a copy to
the customer. If this is a new customer, before entering the sales document, the clerk
must enter the customer's basic information such as name, address, etc. Additionally,
credit for new customers must be approved by Kim.
When Kim completes delivery of the sales order, an accounts receivable clerk records the
delivery on a special screen. When delivery entry is completed, Kim prints the invoices
and sends them to customers. When customers send in their payments, a sales clerk
records the cash receipts on a special input screen. Kim takes the all of the cash receipts
for a day and prepares a single deposit slip form and makes the deposit. Kim later enters
the deposit information from the paper form into the computer.
Prepare an REA diagram describing Kim's database. You may repeat a box for an
individual entity if necessary to make your drawing neat. Kim would like for you to
consider that, eventually, as new stores are opened, she will have store managers in
each store that will perform the tasks she now performs. As a result, the system
should be planned to always store information about the employee associated with
transactions, whether that employee enters information, performs a task (such as
delivery) or formally authorizes the transaction. (1) A particular sales order is
always delivered and invoiced all at the same time. Deliveries include information
for only one Sales Order. (2) A single cash receipt may pay for several deliveries. A
single delivery may be paid for with several different cash receipts.
Prepare the context diagram and the level 0 DFD.