Question 1

Using the Data Flow Diagram (DFD) of the sales process for Simkin Wholesale Vegetable Company (see Figure 1), answer parts i - ix (starting on the next page) in the space provided immediately below each part of this question.

question 1

i.Does Figure 1 portray a physical DFD or a logical DFD?Justify how you came to this answer.

ii.What 'level' is the DFD depicted in Figure 1?Justify how you came to this answer.

iii.What is a context DFD?Ensure your answer explains how, in general terms, a context diagram differs from 'other' types of DFDs.

iv.You are required to draw a context DFD diagram for the system depicted in Figure 1.Your diagram is to be inserted in the space provided for this question at the top of the next page.

As discussed in class this semester, several options are available to enable you to complete the requirements of this question, including either:

Drawing the context DFD on paper, taking a picture of the diagram with your mobile phone, and then uploading an image that can be viewed within this Word document (i.e. such as a jpg image - in Word, you can use the Insert > Picture command).Note: you were asked to 'practice' this task during semester, or

Drawing the context DFD using the drawing tools available to you in Microsoft Word,

Drawing the context DFD using any other drawing program you can access (such as 3D Paint in Windows 10), as long as it allows you to upload an image that can be viewed within this Word document (i.e. such as a jpg image).

Insert your context DFD diagram in the space provided at the top of the next page.

Question 1 (cont'd)

v.The 'data flow' labelled (1) is a request by a customer to purchase some goods from the Simkin Wholesale Vegetable Company.Assume the circle labelled '1.0 Process the sales order' includes a 'credit check' of the customer.

What is the purpose of a 'credit check'

With reference to the various symbols (including numbered data flows) represented on the DFD, explain the 'logic' process that would typically occur during a 'credit check'.

Question 1 (cont'd)

vi.Briefly describe the 'data flow' labelled (39) on Figure 1.(Hint: what is the data?)

vii.Briefly describe the 'data flow' labelled (44) on Figure 1.(Hint: what is the data?)

viii.What is the number of the data flow on Figure 1 where the customer's account (i.e. their accounts receivable file) is debited?

ix.What is the number of the data flow on Figure 1 where the customer's account is credited?