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Chapter 4 Chapter 4 Accounting Systems Accounting Systems & Business Processes & Business Processes ACCOUNTING INFORMATION SYSTEMS ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT The Crossroads of Accounting & IT © Copyright 2012 Pearson Education. All Rights Reserved.

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Page 1: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Chapter 4Chapter 4Accounting Systems Accounting Systems & Business Processes& Business Processes

ACCOUNTING INFORMATION SYSTEMSACCOUNTING INFORMATION SYSTEMSThe Crossroads of Accounting & ITThe Crossroads of Accounting & IT

© Copyright 2012 Pearson Education. All Rights Reserved.

Page 2: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Business Processes & the Accounting System

Accounting spans business processes in the value chain.

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Page 3: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Transaction Cycles

Each transaction cycle is expanded to show the transactions in the cycle.

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Page 4: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Create Invoice activity for Espresso Coffee using DFDs.

DFDs

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Page 5: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Data Flow Diagrams (DFDs) use four symbols:

Agent = Square

Data Flow = Arrow

Data Store (Table) = Open Rectangle

Event or Process = Rounded Rectangle

DFDs

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Page 6: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

DFD Example

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Page 7: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Reading a DFD

Who does What, When, Where & How?

Step 1 Identify the agents (internal and external).

Step 2 Identify events.

Step 3 Identify database tables.

Step 4 Trace the data flows.

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Page 8: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

DFD Exercise

For a bank ATM transaction, identify the following:

1.Agents

2.Events

3.Data stores

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Page 9: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Guidelines for Well-Designed DFDs

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Page 10: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

DFD: 3 Common Errors

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Page 11: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Joey’s DFD

What changes would you request?

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Page 12: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

DFD Exercise

The following data flow diagram has three agents (A1, A2, A3), two processes/events (P1, P2), and two database tables (T1, T2).

Identify and list the errors that you see in the DFD.

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Page 13: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

How Do I Build a DFD (Level 0)?

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Page 14: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

How Do I Build a DFD (Level 0)?

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Page 15: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

How Do I Build a DFD (Level 0)?

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Page 16: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

How Do I Build a DFD (Level 0)?

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Page 17: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

How Do I Build a DFD (Level 0)?

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Page 18: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

How Do I Build a DFD (Level 1)?

Steps 6-10: Repeat steps 1-5 to create a level-1 DFD.

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Page 19: Chapter 4 Accounting Systems & Business Processes ACCOUNTING INFORMATION SYSTEMS The Crossroads of Accounting & IT © Copyright 2012 Pearson Education

Level-1 DFD

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