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PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 1
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 2
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 3
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 4
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 5
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 6
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 7
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 8
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 9
Process
Data flow
Data store
Externalentity
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 10
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 11
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 12
Context diagram
Level 0 diagram
Level 1 diagram
Level 2 diagram
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 13
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 14
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 15
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 16
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 17
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 18
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 19
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 20
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 21
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 22
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 23
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 24
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 25
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 26
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 27
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 28
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 29
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 30
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 31
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 32
For each DFD: Check each process for: A unique name: action verb phrase; number; description
At least one input data flowAt least one output data flowOutput data flow names usually different thaninput data flow namesBetween 3 and 7 processes per DFD
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 33
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 34
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 35
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 36
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 37
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 38
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 39
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 40
PowerPoint Presentation for Dennis, W ixom, & Roth Systems Analysis and Design, 3rd EditionCopyright 2006 © John Wiley & Sons, Inc. A ll rights reserved.6 - 41