Πληροφοριακά Συστήματα

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Πληροφοριακά Συστήματα. Μέρος 2 ο Ανάλυση - Σχεδίαση. Πανεπιστήμιο Αιγαίου Τμήμα Μηχανικών Σχεδίασης Προϊόντων & Συστημάτων Ε΄ εξάμηνο. Ι. Γαβιώτης. Διαφάνειες βασισμένες στο βιβλίο: Alan Dennis, Barbara Haley Wixom, Systems Analysis Design, 2nd ed., J Wiley, 2003. - PowerPoint PPT Presentation

Transcript of Πληροφοριακά Συστήματα

  • & : Alan Dennis, Barbara Haley Wixom, Systems Analysis Design, 2nd ed., J Wiley, 2003. 2 -

  • 2 . . .

  • 1

  • '' . 42% , 53% .

  • (systems analyst) - , . .

  • ... , (gradual refinement)

  • ( ; ;) ( , , ;) ( ;) ( )

  • 1. () (project plan)

  • 2.

  • 3.

  • 4. (conversion plan)

  • (planning)

    (analysis)

    (design)

    (implementation) (feasibility analysis)

  • ; : (structured design) (rapid application development) (agile development)

  • Waterfall model

  • , , ( ) (milestones) . .

  • ,

  • Parallel development

  • ,

  • : CASE (Computer-Aided Software Engineering) 4 /

    Rapid Application Development, RAD

  • Computer-Aided Systems Engineering (=) , , UML, stubs (= ) , , .

  • Insert Figure 1-4 herePhased development

  • Prototyping

  • . , . , .

  • Throw-away prototype

  • : Agile Development: Extreme Programming

  • . 6 . PC , . 6 , . () . , . , . ; , . . : . , .

  • : , , , : , , , , . : , , , ,

  • : 2

  • . . .

  • . .

  • ; . (project sponsor) . ( ). .

  • . :

  • - - 750.000 1,8

  • . , . .

  • , ; ; ( ); ;

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  • 1. ; ; ; ; , ,

  • 2. ; . (cash flow) (Return On Investment, ROI) (break even point)

  • , ( , ) .

  • : , .2,5

  • 3. , ; ;

  • , . , : , , , , , ,

  • .

  • . : .

  • 15% 20% 35% 30%

    4 5.33 9.33 8()

  • , . (milestones)

  • Gantt

  • PERT

  • , 8-10 ;

  • . , . , , . . .

  • : 3

  • . . . .

  • ; . , . .

  • : : '' , , Web, 10, , ,

  • ' ' :

  • . , . : (Business Process Automation, BPA) (Business Process Improvement, BPI) (Business Process Reengineering, BPR)

    BPA BPI BPR0 ++

  • 1. :

  • (problem analysis) ' ' (root cause analysis) . .

  • 2. :

  • Duration Analysis: . , . 8 , 20 . : .

  • Activity-based costing: . () . .: 50, 18 22.000 (, , , , , )

  • Informal benchmarking: . .

  • 3. :

  • Outcome analysis: . . (;) .

  • Technology analysis: . . (brain-storming) .

  • Activity elimination: . ., .

  • 1. Interviews: :

  • . (, ) , . . . , . ; . / .

  • 2. Joint Application Development, JAD: . 10-20 5-10 3 . .1-2 . .

  • JAD

  • JAD . . , . . , . .

  • JAD (e-JAD) . : . .

  • 3. Questionnaires: , ( web forms). ( ). .

  • 4. Document analysis: , , , ( ) / ( ).

  • 5. Observation: () . . : / . . .

  • . .

  • ( & ) , . . , . : , JAD, , . .

  • 4

  • . .: , ' '. , ' '.

  • (use case) . . . .

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  • . , , . . . . UML. .

  • . (, . , ). . . , . . . . , , .

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    & 5000: (' ) 3 / . Engineering Business Administration.

    [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 . . , , , , . . , , , SAP consultant. [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 : . , , . : . : ; ; ; . [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is & 5000: (' ) 3 [email protected] http://www.syros.aegean.gr/users/gaviotis/is