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web总结

时间：2023-03-20 19:52:58 下载该word文档

WhatisWebApplication?AWebapplicationisasoftwaresystembasedontechnologiesandstandardsoftheWorldWideConsortium(W3CthatprovidesWebspecificresourcessuchascontentandservicesthroughauserinterface,theWebbrowser.Web应用程序或者WebApp,是指那些用户界面驻留在Web浏览器中的任何应用程序。

Motivation?Document-centricapproachtheassumedsimplicityofWebapplicationsdevelopmentKnow-howfromrelevantdisciplinescannotbeappliedorisnotused
WhatisWebEngineering?1.WebEngineeringistheapplicationofsystematicandquantifiableapproaches(concepts,methods,techniques,toolstocost-effectiverequirementsanalysisi,design,implementation,testing,operation,andmaintenanceofhigh-qualityWebapplications.2.WebEngineeringisalsothescientificdisciplineconcernedwiththestudyoftheseapproaches.
3maintypesofapplicationsontheWebWebhypermediaapplicationsWebsoftwareapplicationsWebapplications:Combination（结合）oftheabove
CategoriesofWebapplications?Interactive&TransactionalWebapplications.
Workflow-basedWebapplications.Collaborative&SocialWebapplications.Portal-OrientedWebapplicationsUbiquitousWebapplications
CharacteristicsofWebApplicationsProduct-relatedCharacteristics•Constitute（构成）themajorbuildingblocksofaWebapplication•Consistingof–Content•Document-centriccharacterandmultimediality（多媒体）•Qualitydemands–Thehypertextualstructure(navigationalstructure•Non-linearity（非线性特性）
•Disorientationandcognitiveoverload1
–Presentation(theuserinterface•Aesthetics(美学
•Self-explanation（自我解释）Usage-relatedCharacteristics•SocialContext:Users–Spontaneity（自发性）
–Multiculturality（文化多元性）
•TechnicalContext:NetworkandDevices–Qualityofservice（服务质量）
–Multi-platformdelivery（多平台交付）•NaturalContext:LocationandTime–Globality（全球性）–availability（可用性）
Development-relatedCharacteristics•TheDevelopmentTeam–Multidisciplinarity(多学科性–Youngaverageage–Communitydevelopment•TechnicalInfrastructure（基础结构）–Inhomogeneity(不同类性–Immaturity(不成熟•Process–Flexibility（适应性）–Parallelism（并行性）•Integration–Internalintegration（内部集成）–Externalintegration（外部集成）
EvolutionoftheWeb•Continuouschange（持续变更）–Requirements–Conditions–Webtechnologiesandstandards•InparticularmakesitnecessarytocontinuouslyadaptWebapplicationstothese•Competitivepressure（竞争压力）–Time-to-marketpressure–NecessityforaWebpresence–shorterproductlifecyclesandextremelyshortdevelopmentcyclesandapparentlyleavenoroomforasystematicdevelopmentprocess.
RequirementsoftheWeb2

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