النتائج (
الإنجليزية) 3:
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Jelled, 12 then the likelihood of success for the XP project is reduced. Consequently, theUse of XP in combination with outside contractors produces a highly questionable outcomeSince the outside contractors may never jell with insiders.13 XP requires aGreat deal of discipline to prevent projects from becoming unfocused and chaotic. FurthermoreIt is recommended only for small groups of developers not more than (10),And it is not advised for mission-critical applications. Since little analysis and designDocumentation is produced with XP, there is only code documentation; thereforeMaintenance of large systems developed using XP may be impossible. Also, sinceMission-critical business information systems tend to exist for a long time, the utilityOf XP as a business information system development methodology is in doubt. FinallyThe methodology requires considerable on-site user input, something that is frequentlyDifficult to obtain
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