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By N2H




Prototyping

October 25, 2007 Oktober 25, 2007

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Prototyping! Prototyping!

Prototype is the model of a business that serves as a model for future development. Prototype er den model af en virksomhed, der fungerer som en model for den fremtidige udvikling.

A prototype of a business system may be used to demonstrate its initial performance and the system may be modified to achieve its objective. En prototype af en virksomhed systemet kan anvendes til at vise sin indledende resultater og systemet kan ændres for at nå sine mål.

A prototype may be used to En prototype kan anvendes til

  • select the best design from a number of designs udvælge de bedste design fra en række af mønstre

  • to test a chosen design under different environmental conditions at afprøve et valgt design under forskellige miljømæssige forhold

  • To verify that the users needs have been met. For at kontrollere, at brugernes behov er blevet opfyldt.

  • Verify that the design meets the specifications Kontroller, at konstruktionen opfylder specifikationerne

Generally prototyping is not advisable for batch systems or one that produces standard hard copy report using a large institutional database. Generelt prototyper er ikke tilrådeligt for batch systemer eller en, der producerer standard hard copy rapport bruger en stor institutionel database. Online interactive systems favour prototyping eg advisable in decision support system. Online interaktive systemer fordel af prototyper f.eks tilrådeligt i beslutningsstøtte system.

There are 3 approaches to prototyping according to logical structured design methodology. Der er 3 tilgange til prototyping ifølge logisk struktureret design metode.

  1. 1 st Approach: 1 st metode:

In this approach a series of menus and screens are built and the user processes transaction as he would do in a live system. I denne tilgang en række menuer og skærmbilleder er bygget og brugeren processer transaktion som han ville gøre i en levende system. If it’s acceptable the prototype is further developed. Hvis det er acceptabelt prototypen er udviklet yderligere. This system is best when the user requirements are well defined and it does not support logic or a database. Dette system er bedst, når brugeren kravene er veldefinerede, og det understøtter ikke logik eller en database.

  1. 2 nd Approach: 2 nd metode:

This is building of a throw away version for user trials. Dette er opbygningen af et smider version til brugeren forsøg. It incorporates system logic in addition to menus screen and databases. Den indeholder systemets logik ud til menuerne skærmen og databaser. This is the best used in large complex projects where user’s requirements are not well defined. Det er den bedste bruges i store komplekse projekter, hvor brugerens krav er ikke veldefineret. The prototype software is unlikely to have performances and facilities for implementation as a physical system Prototypen software er usandsynligt, at have forestillinger og faciliteter til gennemførelse som et fysisk system

  1. 3 rd Approach 3 rd Approach

This is the second approach but the prototyping software is intended to form the final system. Dette er den anden tilgang, men det prototyper software er beregnet til at danne det endelige system. This becomes the pilot for a project with phased implementation plan. Dette bliver pilotprojekt for et projekt med etapevis gennemførelsesplan.

Advantages of prototyping: Fordele ved prototyping:

  • Enable the user to visualize how the system will work. Gøre brugeren i stand til at visualisere, hvordan systemet vil fungere.

  • An accurate user requirement is met by or in that if one does not want a certain system or if it has a weakness one can change. En nøjagtig brugeren krav er opfyldt af eller i at hvis man ikke ønsker et bestemt system eller hvis den har en svaghed man kan ændre.

  • Increases productivity Øger produktiviteten

  • Saves time and money on system analysis. Sparer tid og penge på systemet analyse.

  • Improves or reduces backlogs by improving turn-around time in finding system solutions. Øger eller reducerer ophobet ved at forbedre tur-around gang med at finde system løsninger.

  • New user requirements can evolve Ny bruger krav kan udvikle sig

  • Increase productivity Forøg produktiviteten

  • Saves time and costs by ensuring they are implementing the correct design. Sparer tid og omkostninger ved at sikre de gennemfører den korrekte design.

  • Heavy user involvement less resentment Heavy bruger inddragelse mindre vrede

  • Early training Tidlig uddannelse

  • User feel confident supporting a system they have already tested. Bruger føler sig overbevist om at støtte et system, de allerede har afprøvet.

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