Rais12 SM CH03

CHAPTER 3 SYSTEMS DEVELOPMENT AND DOCUMENTATION TECHNIQUES SUGGESTED ANSWERS TO DISCUSSION QUESTIONS 3.1

Identify the DFD elements in the following narrative: A customer purchases a few items from a local grocery store. Jill, a salesclerk, enters the transaction in the cash register and takes the customer’s money. At closing, Jill gives both the cash and the register tape to her manager. Data Flows: merchandise, payment, cash and register tape Data Source: customer Processes: capture sales and payment data and collect payment, give cash and register tape to manager Storage: sales file (register (register tape), tape), cash register register

3.2

Do you agree with the following statement: “Any one of the systems documentation procedures can be used to adequately document a given system”? Explain. It is usually not sufficient to use just one documentation tool. Every tool documents a uniquely important aspect of a given information system. For example, system flowcharts are employed to understand physical system activities including inputs, outputs, and processing. In contrast, data flow diagrams provide a graphic picture of the logical flow of data within an organization. Each alternative is appropriate for a given aspect of the system. As a result, they work together to fully document the nature and function of the information system.

3-1

Ch. 3: Systems Development and Documentation Techniques

3.3

Compare the guidelines for preparing flowcharts and DFDs. What general design principles and limitations are common to both documentation techniques? Similar design concepts include the following: 







Both methods require an initial understanding of the system before actual documentation begins. This insures that the system is properly represented represented by by the diagram. diagram. Both measures require the designer to identify the elements of the system and to identify the names and relations associated with the elements. Both methods encourage the designer to show only the regular flows of information and not to be concerned with unique situations. Both approaches require more than one “pass” through the diagramming or flowcharting process to accurately accurately capture capture the essence essence of the system. system.

The product of both methods is a model documenting the flow of information and/or documents in an information system. Both documentation methods are limited by the nature of the models they employ, as well as by the talents and abilities of the designer to represent reality.

3-2

Accounting Information Systems

3.4

Your classmate asks you to explain flowcharting conventions using real-world examples. Draw each of the major flowchart symbols from memory, placing them into one of four categories: input/output, processing, storage, storage, and flow and miscellaneous. For each symbol, suggest several uses.

The major flowcharting symbols and their respective categories are shown in Fig. 3.8 in the text. With respect to how the symbols are used, student answers will vary. Possible examples include the following: Input/Output Symbols Document: an employee time card, a telephone bill, a budget report, a parking ticket, a contract Display: student information monitors, ATM monitors, the monitor on your microcomputer. Manual input: cash registers, ATM machines 

 

Processing Symbols Processing: processing a student payroll program, program, assessing assessing late fees Manual operation: writing a parking ticket, preparing a paper report, collecting and entering student payments  

Storage Symbols Magnetic disk: alumni information data base, a report stored on your PC hard disk Magnetic tape: archival student information On-line storage: a student information data base or an airline reservation data base stored on-line. File: purchase order file for a department, a student housing contract file   



Flow (Miscellaneous) Communication link: a telephone linkage that connects you to an on-line data base. 

3-3


SUGGESTED ANSWERS TO THE PROBLEMS

Prepare flowcharting segments for each of the following operations:

3.1

Assorted Flowcharting Segments: a.

processing transactions stored on magnetic tape to update a master file stored on magnetic tape Transactions

Old Master File

b.

File Update

New Master File

processing transactions stored on magnetic tape to update a database stored on a magnetic disk Transactions

File Update

Data base

c. converting source documents to magnetic tape using a computer-based optical character reader (OCR) OCR Source Documents

Conversion of Documents to Tape by OCR

Source Data

d. processing OCR documents online to update a database on magnetic disk

OCR Source Documents

Update Data base

3-4

Data base


3.1 (continued) Assorted Flowcharting Segments e.

reading data from a magnetic disk into the computer to be printed on a report

Data File

f.

Report

Report Generation

using a computer or terminal to key data from source documents to a file stored on a magnetic disk

Terminal Data File Source Documents Key Data

g.

manually sorting and filing invoices numerically

Invoices

Sort Numerically

Invoices

N

3-5


3.1 (continued) Assorted Flowcharting Segments h.

using a terminal to enter source document data and send it to a remote location where an online processing system records it in a database stored on magnetic disk

Terminal

Online Processing System

Data base

Source Data

i.

a scheduled automatic backup of an internal hard drive to an external hard drive

Internal Hard Drive

j.

Scheduled Automatic Backup

External Hard Drive

using a terminal to query customer sales data maintained on a magnetic disk

Display Query Customer Sales Data

Enter Query

3-6

Database


3.1 (continued) Assorted Flowcharting Segments k.

enter employee hours recorded on time cards in the payroll transaction file maintained on disk and update wage data maintained on the payroll master file

Payroll Transaction File

Terminal

Time Card

Record time card data on the payroll transaction file and update wage data maintained on the payroll master file

Enter Time Card Data

Payroll Master File

3-7


3.1 (continued) Assorted Flowcharting Segments l.

use a terminal to access a price list maintained on disk to complete a purchase order. An electronic copy of the purchase order is sent to the vendor and a backup copy is printed and filed by vendor name

Purchase Order (electronic)

To Vendor

Access Price List, List, create electronic purchase order & print a paper backup copy

Price Data

Purchase Order (paper)

A

m.

update an airline reservation on a Web-based airline reservation system from a home computer

Request, complete, and submit an online reservation change form

Revise reservation data on web-based airline reservation system

3-8

Reservation File


Happy Valley Utility Company

3.2 a.

Draw a system flowchart of the billing operations, commencing with the computer preparation of the meter reading forms and ending with the mailing of customer bills.

Customer Master File

Meter Form Preparation

Meter Forms

Sort By Cust #

Enter Current Reading

Completed Meter Forms

Customer Meter Data

Customer Meter Data


File Update and Billing

Error List & Summary Report

Customer Bills

Mail to Customers

3-9

Mark-Sense Document Reader


3.2 b.

Draw a system flowchart depicting customer payments processing, starting with the mail room operations and ending with the two printed reports. Checks Remittance Stubs

Correct Stubs

OCR Document Reader

Compare & Separate

Checks

To Cashier

Incorrect Stubs

List of Other Receipts

Type Correct Stubs

Type Correct Stubs

Corrected Stubs

Corrected Stubs

Payments Posting Run

Report of Past-Due Accounts

Error List & Summary Report


3-10


3.3

Prepare a system flowchart of the process described. Payroll Processing for Dewey Construction Company: Job Time Tickets

Key to Tape Encodings

Job Time Records Tape

Payroll Master File

Work in Process Master File

Payroll Processing System

Earnings Statement Payroll Register

Paycheck

3-11

Error Transactions and Summary

Prepare a document flowchart to reflect how ANGIC Insurance Company processes its casualty claims.

3.4

ADJUSTER

CLAIMS DEPARTMENT DEPARTMENT

DATA PROCESSING PROCESSING

Notice of Loss

START From Claimant

1 Proof of Loss Form

Prepare proof of loss, claim recored

From Claimant

2 3 4

1 Proof of Loss Form

Notice of Loss

Notice of Loss

2

Claim Record

3 Claim Record

4 Prepare Separate Report

Assist Claimant with Form

2 Proof of Loss

N

Adjuster's Report

To Claimant Adjuster's Report

1

1 Proof of Loss

Proof of Loss

2

2

Authorize Claim Payment

3

2 Proof of Loss

Prepare Check & Disbursement list

Disbursement List

4 To Accounting 1

Adjuster's Report

Proof of Loss N

To Claimant

Check

A To Claimant

3-12

3.5

a. Prepare a document flowchart that indicates the interaction and use of these documents among all departments at Beccan Company’s central facility. It should provide adequate internal control over the receipt, issuance, replenishment, and payment of tires and supplies. You may assume that there is a sufficient number of document copies to ensure that the perpetual inventory system has the necessary basic internal controls. b. Using the flowcharting conventions discussed in Focus 3.2, critique the instructor provided CMA solution. List all the ways the CMA solution violates those flowcharting guidelines. Adapted from the CMA Exam. Note: the CMA solution shown does not follow the flowcharting flowcharti ng conventions discussed in the chapter. When the authors authors use this problem they have the students critique the CMA exam solution (assignment 3.5b), based upon the conventions discussed in Focus 3.2.

3-13


3.6 a.

Prepare a context diagram and level 0 DFD to document the payroll processing system at No-Wear Products. Context Diagram for the payroll processing system at No-Wear Products

Employee Time Card Data Operating Documents

Payroll Processing System

Employee Paychecks

Internal Reports

Management

Human Resources Department Personnel Data Withholding Reports

3-14

Governmental Agencies


3.6

a. (continued.) (continued.) Level 0 Data Flow Diagram for the payroll processing system at No-Wear Products.

Operating Departments

Time Card Data

Human Resources Department

Personnel Changes 1.0 Process Employee Timecards

2.0 Update Payroll File

Payroll File

4.0 Generate Payroll Reports

3.0 Generate Paycheck Internal Reports

Employee

Withholding Reports

Pay Pay check Management

3-15

Governmental Agen Agencies cies


3.6

b. Prepare a document flowchart to document the payroll processing system at No-

Wear Products. No-Wear Products-Payroll Employees in Functional Department

Payroll

Time Card

Record Time Data

Record Time

Completed Time Card

Enter Time Data

Process Payroll Changes

Completed Time Card

Enter Payroll Changes

Payroll File

From Human Resource Dept

Payroll Changes

N

Process Payroll, Prepare Checks and Reports

Paycheck

N

Employee

Management Report

Management

Federal Tax Report

Stat Tax Report

3-16

Goverrnment


3.7 a.

Prepare a context diagram and a level 0 DFD to document accounts payable processing at S&S.

Purchasing

Receiving Purchase Order Receiving Report

S&S Accounts Payable Invoice

Vendor

Accounts Accounts Payable Payable Report

Payment & Remittance Advice

3-17

Management


3.7

a. (continued.) (continued.) Level 0 Data Flow Diagram of S&S Accounts Payable

Vendor

Purchasing

Receiving

Invoice Purchase Order

1.0 Record Payable

2.0 Collect & Store Purchase Orders & Receiving Reports

Receiving Report

Purchase Orders Accounts Payable

Vendor Invoices

Receiving Reports

Cash Disbursements Journal

3.0 Make Payment

Accounts Payable Report

4.0 Prepare Management Reports

Payment & Remittance Advice

Paid Invoices

Management

3-18

Vendor


3.8 a.

Develop a context diagram and a level 0 DFD of the acquisition/payment system at Oriental Trading.

Purchase Requisition Purchase Order

Vendor

Vendor Acknowledgement

Inventory System

Acquisi Acquisition tion// Payment System

Receiving Report

Purchase Invoice

Vendor Payment

3-20


3.8

Diagram: Acquisition/Payment System at at Oriental a. (continued) Level 0 Data Flow Diagram: Trading:

Inventory File

Vendor File

1.0 Prepare Purchase Order & Notification Purchase Order

Vendor

Purchase Requisition

Vendor Acknowledgement

Inventory System

P.O. Notification Vendor Invoice

Receiving Report Receiving Reports

2.0 Update Accounts Payable

Purchase Orders

Vendor Invoices Accounts Payable Master File Check

Payment Authorization

3.0 Pay Vendor General Ledger

3-21


3.8

Prepare a document flowchart to document the acquisition/payment acquisition/pa yment system at Oriental Trading.

b.

Oriental Trading Acquisition/Payment System Purchasing

Accounts Accounts Payable Payable

B

From Inventory Purchase Requisition

Accounting Accounting Department Department

D

Inventory File

Prepare Purchase Order

A

From Receiving Department

From Vendor

Purchase Order Notification

Receiving Report

Invoice

D

D

D

Enter Purchase Requisition

Payment Authorization zation

Enter payment Authorization Authorization

Vendor File

Purchase Order

Match Purchase Order, Receiving Report, and Invoice. Prepare Payment Authorization zation

D

Prepare Check, Update Accounts Payable and General Ledger

Payment Authorization Authorization

B To Vendor

Check

From Vendor Purchase Order

D

Vendor Acknowledgment Acknowledgment

Enter Accounts Payable Data for Update

Receiving Report Invoice

Enter Vendor Acknowledgment Acknowledgment

Prepare Purchase Order Notification

Purchase Order Notification

To Vendor

Update Accounts Payable Master File

D

Accounts Accounts Payable Master File

A

3-22

General Ledger Master File


3.9 a.

Develop a context diagram and a level 0 DFD for the cash receipts system at S&S.

Bank Deposit

Payment at Sale Cash Receipts System

Customers Remitances on Account

Cash Receipts Report

Management

Aged Trial Balance Balance Credit and Collections

3-23


3.9

a. (continued)

Customers

Level 0 Data Flow Diagram of the Cash Receipts System at S&S:

Remittance File

Payments at Sale Remittances on Account

1.0 Process Payments

Remittance Slips

2.0 Update Customer Accounts

Endorsed Checks & Cash, Deposit Slip

Bank

Accounts Receivable Ledger

3.0 Prepare Reports

Aged Trial Balance

Cash Receipts Report

Management

3-24

Credit and Collections


3.9

Prepare a document flowchart to document the cash receipts system at S&S.

b.

S&S Cash Receipts System Treasurer

Clerk

Accounts Receivable

From Customer

A

B

Cash and Checks

Cash and Checks

Remittance Slip

Remittance Slip

B

Deposit Slip

Update Accounts Accounts Receivable Ledger/File

To Bank

Accounts Accounts Receivable Ledger/File

Endorse Checks and Prepare Deposit Slip for Cash & Checks Remittance Slips Generate Weekly Reports Cash and Checks D

Deposit Slip Cash Receipts Report

Aged Trial Trial Balance Balance

A To Management

To Credit & Collections

3-25


3.10

Draw a context diagram and at least two levels of DFDs for the preceding operations.

Invoice

Coupon Order Phone Order

Shipping Notice

Cancellation Payment

Cancellation Response Mail Order System

Customer

Customer Order Inquiry Response

Order Inquiry Product Inquiry

Product Inquiry Response

Payment Inquiry

Payment Inquiry Response

3-26


3.10.

Level 0 Data Flow Diagram for a mail order company:

phone order coupon order

cancellation response

order inquiry 1.0 Process Order Transaction

Customer

product inquiry response

Customer

order inquiry response

order cancellation product inquiry

valid order invoice Order File

product details

Customer shipping notice

valid order customer details 2.0 Process Shipment

Product File product details

billed order

Customer File

Accounts Receivable File

payment inquiry Customer

billed order

payment 3.0 Process Payment Transaction

3-27

payment inquiry response


3.10.

Level 1 Data Flow Diagram for a mail order company:

Customer order cancellation

1.1 Process Order

valid order

cancelled order

order

1.2 Process order cancellation

cancellation response

Order File

Customer order details Product File order inquiry product details

1.4 Process product inquiry

1.3 Process order inquiry

product inquiry response

product inquiry inquiry response

Customer

3-28


3.11 a.

Prepare a context diagram and at least two levels of DFDs for this operation.

Registration request Course enrollment reports Course Registration System

Student

Instructor

Fees notice Prerequisite notice Course closed notice Student acceptance notice

Level 0 Data Flow Diagram for a course registration system:

accounts receivable file

Instructor

student records file

Registration details

Student

fees notice

class lists file

1.0 Register student

course records file

prerequisite notice course closed notice student acceptance notice

3-29

course enrollment report 2.0 Prepare course enrollment reports


3.11

a. (continued ( continued))

Level 1 Data Flow Diagram for a registration system:

accounts receivable file

1.1 Check fees due

student record file paid registration details

course file

fees notice registration details

1.2 Check prerequisites

prerequisite notice

class list file

valid registration details 1.3 Check class availability closed course notice

Student student acceptance notice

3-30

accepted registration details

1.4 Register student


3.11

Prepare a document flowchart to document this operation.

b.

Registration System Registrar

From Student

Registration Request Form

N

Enter Registration Request

Check for unpaid fees

Accounts Receivable

Check Course Prerequisites

Student Transcripts

Check course availability and add student to class

Class Enrollment

Course Enrollment Report

Print Student Registration Report, Update Accounts Receivable, Print Course Enrollment Reports

If fees are owed, registration is cancelled and the registration report becomes a bill for unpaid fees. If a requested class is full, the report report indicates “course closed.” If the

Instructors

student is accepted into the course(s): course day, time, time, and room are printed next to the course. Fees and tuition are printed on the report.

Student Registration Report

To Student

3-31


3.12 You recognize weaknesses in the existing system and believe a document flowchart

would be beneficial in evaluating this client’s internal control in preparing for your examination of the financial statements. a. Complete the flowchart given in Figure 3-12, for sales and cash receipts of Charting, Inc., by labeling the appropriate symbols and indicating information Adapted from the 1969 CPA Exam flows.

3-32


3.12a

(Continued)

3-33


3.12 b.

Using the guidelines for preparing flowcharts in Focus 3-2 and the flowcharting symbols shown in Figure 3-8, critique the flowchart shown in Figure 3-12. List the ways the flowchart violates the guidelines or uses improper symbols.

The flowchart in Fig. 3.12 violates the General Guidelines for Preparing Flowcharts in the following ways. 1.

2.

The text uses the Terminal symbol (the oval) to indicate an external party. Figure 3.12 uses a large arrow to indicate items coming into the system (mail, cash, and items received from the bank). It uses a line with an an arrow that stops in a small vertical vertical line, accompanied accompanied by To customer (or To Bank), to indicate items items exiting the system. The solution has the mail clerk, the sales clerk, and the inventory control clerk in one column. Three columns would be better.

3.

Additional comments (Prepare remittance advice if needed) are not enclosed in an annotation box.

4.

Each manual processing symbol does not have an input and an output. For example, the symbols under mail clerk and sales clerk do not have an input.

5.

The file symbol (the triangle) does not need the word File in it. The symbol itself conveys that it is a file.

3-34


3.13 a.

Bottom Manufacturing Manufacturin g Corporation Corporatio n Charge Sales System

List the procedures or the internal documents that are labeled letters c to to r in in the flowchart of Bottom Manufacturing Corporation’s charge sales system. Organize your answer as follows (Note that the explanations of the letters a and and b in in the flowchart are entered as examples):

Flowchart Symbol Letter

Procedures or Internal Document

a

Prepare six-part sales order.

b

File by order number.

FLOWCHART SYMBOL LETTER a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. r.

INTERNAL CONTORL PROCEDURE OR INTERNAL DOCUMENT Prepare six-part sales order. File by order number. Approve customer credit and terms. Release merchandise to shipping department. File by sales order number. File pending receipt of merchandise. Prepare bill of lading. Copy of bill of lading to customer. Ship merchandise to customer. File by sales order number. Customer purchase order and sales order. File pending notice of shipment. Prepare three-part sales invoice. Copy of invoice to customer. Post to (or enter in) sales journal. Account for numerical sequence. Post to customer accounts. File by (payment due) date. (CPA Examination, adapted)

3-35


b.

Using the guidelines for preparing flowcharts in Focus 3-2 and the flowcharting symbols shown in Figure 3-8, critique the flowchart shown in Figure 3-13. List the ways the flowchart violates the guidelines or uses improper symbols. Fig. 3.13 violates the General Guidelines for Preparing Flowcharts in the following ways:

1. The text uses the Terminal symbol (the oval) to indicate an external party. Figure 3.13 uses the off page connector symbol. 2. Document numbers numbers should be placed placed in the top right hand corner corner of the document document symbol. 3. Sales order 2 is not shown passing through manual symbols labeled g and i so that it can end up in the file shown at the bottom of the shipping column. The same thing happens in the other columns. 4. Sales order 4 is filed in the finished goods department, yet the shipping column (third set of symbols in the column) column) shows sales order 4. This should be sales order 2, not 4. 5. The line showing information being posted to the accounts received ledger should come out of symbol q and should be a dotted line. The line to the sales journal (below symbol o) should also be a dotted dotted line. 6. In the shipping column, when the three Bills of Lading are created, the arrow downward to symbol i should come from copy 2 of the Bill of Lading, not copy 3. The same applies to the sales invoice in the Billing Column (arrow from copy 1). 7. Instead of using annotation symbols to tell how documents are filed, use the letter D for date, N for numerically, and A for alphabetically. When more than one document is being filed (symbols j, l, and bottom of Billing Column) Column) or the method of of filing is unclear unclear (symbol (symbol r, file sales sales invoice by payment payment due date) date) an annotation annotation symbol symbol can be used. Additional items to improve efficiency of flowchart 1. Symbols p and q could be combined into one symbol.

3-36


3.14 a.

Prepare and file a tax return with the tax owed to the Internal Revenue Service.

Context

Withholding Form

Prepare Taxes

IRS 1040 Form

Employer

IRS

Level 0

Withholding Form

1.0 Collect Tax Documents

IRS

Tax Documents Employer

IRS Payment and Form 1040 2.0 Prepare IRS Form 1040

3-37


3.14 (continued) b.

A customer pays an invoice with a check. Accounts receivable is updated to reflect the payment. The check is recorded and deposited into the bank.

Context

Deposit

Payment Cash Receipts

Customer

Bank

Level 0

Payment Data

2.0 Record Customer Payment

Accounts Accounts Receivable

1.0 Record Cash Receipts

Payment

Payment Customer

Bank Cash Receipts 3.0 Prepare Deposit

3-38

t i s o p e D


3.14 (continued) c.

A customer places an online order to purchase merchandise. The order is approved, filled, and sent to the customer with an invoice.

Context

Purchase Order Customer

Order Entry System

Merchandise

Inv o oi i c ce

Level 0

Purchase Order

1.0 Receive Order

Open Orders

Customer

Invoice

2.0 Approve Order

Sent Invoice Copies

4.0 Prepare Invoice Approved Orders

Shipped Orders

3.0 Fill and Ship Order

3-39


3.14 (continued)

An inventory request is received by the purchasing department. The purchasing department prepares and sends a purchase order to the appropriate vendor.

d.

Context

Inventory Department

Inventory Request

Purchasing System

Vendor Purchase Order

Level 0

Inventory Request

Inventory Department

1.0 Record Purchase Request

Inven Inventory tory

Purchase Order 2.0 Prepare Purchase Order

Open Purchase Requests

3-40

Vendor

Approved Vendor List


3.14 (continued)

A vendor invoice is received, reviewed, and compared against the appropriate purchase order, then paid and filed.

e.

Context

Invoice Vendor

Cash Disbursements Payment

Level 0

Invoice

1.0 Receive Invoice

Open Invoices

Vendor 2.0 Approve Invoice Payment

Payment approval 3.0 Prepare Payment

3-41

Open Purchase Orders


3.14 (continued) f.

A bill of lading for ordered inventory is received from a vendor, recorded, checked against the appropriate purchase order, and filed.

Context

Bill of Lading

Receiving System

Vendor

Level 0

Bill of Lading

2.0 Compare Bill of Lading with Purchase Order

1.0 Record Bill of Lading Vendor

Bill of Lading Open Purchase Orders

3-42


3 .15

Prepare a program flowchart to help Melanie program this process.

Start

Input Weight (W), Height (H)

Body Mass Index (BMI) = W/H^2

BMI < 18.5

Yes

Weight Status (WS) = Underweight

No

WS = Normal

No

BMI > 25

Print W, H, BMI, WS

End

3-43

Yes

WS = Overweight


3.16

1. Statements are prepared and sent to customers from data contained in the accounts receivable data store.

K

2. A customer sends a sales invoice to the accounts payable process.

D

3. A check is manually prepared from data on a vendor invoice.

G

4. The cash receipt process updates the cash receipts data store.

H

5. A sales invoice is manually prepared and sent to a customer.

I

6. A report is prepared from data stored on magnetic tape.

C

7. Billing data are entered online and used to update the sales order file and the customer master file.

A

8. Data from a cancelled invoice are used to update the cash disbursements ledger.

J

9. A sales order is prepared manually. Copy 1 is sent to the warehouse and copy 2 is filed.

B

10. An accounts receivable aging report is prepared from the accounts receivable master file and the cash receipts master file, both stored on disk.

E

11. An error listing and batch total are compared and filed.

F

3.17

Students are to replicate the flowchart presented in the problem using documentation software such as Visio, Microsoft Word, Microsoft Excel, etc.

3.18

Students are to replicate the data flow diagram presented in the problem using documentation software such as Visio, Microsoft Word, Microsoft Excel, etc.

3-44


SUGGESTED ANSWERS TO THE CASES 3-1

You are the systems analyst for the Wee Willie Williams Widget Works (also known as Dub 5, which is a shortened version of 5 Ws). Dub 5 produces computer keyboard components. It has been producing keyboards for more than 20 years and has recently signed an exclusive 10-year contract to provide the keyboards for all Dell personal computers. As the systems analyst, you have been assigned the task of developing a level 0 DFD for Dub 5’s order processing system. You have finished gathering all the information you need to develop the first-pass DFD and now want to complete the diagram. Level 0 DFD for Dub 5: Order 1.0 Credit Review

Customer

Credit file

Order Rejection Approved orders 2.0 Enter customer orders Customer

Inventory

Open Orders

3.0 Check Inventory & Prepare Packing Slip

Warehouse

Packing Slip

tice Shipping No ti 4.0 Prepare Invoice

Invoice Copy

Accounting

Invoice

Invoice

Customer

3-45


3-2 Level 1 DFD for Dub 5:

Customer Order Credit File

1.1 Check Credit

Customer Account

Approved Approved Order Order

Rejected Order Customer 1.2 Check Current Order against Credit Limit

Over Credit Limit Notice

Credit Application

Rejected Order Lacking Credit Approval Approval

1.3 Prepare Credit Application Application

Note: The Order Rejection Rejection notice shown shown on the context level level diagram diagram and the level 0 diagram can take take two forms: The Over Credit Limit Notice or the Credit Application. These two items are shown on the level 1 DFD.

3-46

Rais12 SM CH03

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