Systems Analysis and Design Systems Analysis and DesignSystems Analysis and Design Systems Analysis and DesignSystems Analysis and Design Systems Analysis and DesignSystems Analysis and Design Systems Analysis and Design Alan Dennis, Barbara Haley Wixom, and Roberta Roth PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 1 Alan Dennis, Barbara Haley Wixom, and Roberta Roth John Wiley & Sons, Inc. Slides by Candace S. Garrod Red Rocks Community College Application Architecture Application ArchitectureApplication Architecture Application ArchitectureApplication Architecture Application ArchitectureApplication Architecture Application Architecture Chapter 8 PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 2 Chapter 8 Key Definitions Key DefinitionsKey Definitions Key Definitions Architecture design Plans for how the system will be distributed across computers and what the hardware and software will be used for each computer PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 3 and software will be used for each computer Hardware and software specification Describes the hardware/software components in detail to aid those responsible for purchasing those products. ELEMENTS OF AN ELEMENTS OF AN ELEMENTS OF AN ELEMENTS OF AN ELEMENTS OF AN ELEMENTS OF AN ELEMENTS OF AN ELEMENTS OF AN ARCHITECTURE DESIGN ARCHITECTURE DESIGNARCHITECTURE DESIGN ARCHITECTURE DESIGNARCHITECTURE DESIGN ARCHITECTURE DESIGNARCHITECTURE DESIGN ARCHITECTURE DESIGN PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 4 Architectural Components Architectural Components Architectural Components Architectural Components (Functions) of Software (Functions) of Software(Functions) of Software (Functions) of Software Data storage Data access logic Processing required to access stored data Application logic PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 5 Application logic Processing logic of the application Presentation logic Information display and user command processing Architectural Design Purpose Architectural Design PurposeArchitectural Design Purpose Architectural Design Purpose Determine what parts of the application software will be assigned to what hardware. Hardware options: PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 6 Hardware options: Clients Input/output devices employed by users PCs, laptops, handheld devices, cell phones Servers Larger computers storing software Accessible by many users Server ServerServer Server- -Based Architectures Based ArchitecturesBased Architectures Based Architectures Mainframe Minicomputer Microcomputer (personal computer) PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 7 Microcomputer (personal computer) Client ClientClient Client- -Based Architectures Based ArchitecturesBased Architectures Based Architectures Terminals Microcomputer (personal computer) Special purpose terminals(ATMs, PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 8 Special purpose terminals(ATMs, kiosks, Palm Pilots, and many others) Client ClientClient Client- -Server Architectures Server ArchitecturesServer Architectures Server Architectures Server-based Architecture Client-based Architecture Client - server based Architecture PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 9 Client - server based Architecture Server ServerServer Server- -Based Architecture Based ArchitectureBased Architecture Based Architecture PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition Copyright 2006 © John Wiley & Sons, Inc. All rights reserved. 9 - 10