预览加载中，请您耐心等待几秒...

BS模式下ADO.NET数据库访问技术的设计及应用.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

BS模式下ADO.NET数据库访问技术的设计及应用 Introduction BSmode,whichstandsforBrowser/Servermode,isasoftwarearchitecturemodelthatutilizeswebbrowsersasclientsandserversasprovidersofcontentandservices.Thisarchitecturehasbecomeincreasinglypopularduetoitseaseofuseandaccessibilitywiththewidespreaduseoftheinternetandwebbrowsers.OneofthetechnologiescommonlyusedinBSmodeisADO.NET,adatabaseaccesstechnologythatenablescommunicationbetweenwebapplicationsanddatabases.ThispaperseekstodiscussthedesignandapplicationofADO.NETinBSmodefordatabaseaccess. DesignofADO.NETinBSMode ADO.NETwasdevelopedbyMicrosoftasaframeworkforaccessingandmanipulatingdataindifferenttypesofdatabases.Thetechnologyprovidesasetofclasses,interfaces,andAPIsthatareusedtointeractwithdatabasesandexecutequeries.InBSmode,ADO.NETcanbeusedtoretrieveandmanipulatedatafromaserver-sidedatabasebyawebapplication. AcommonscenarioinBSmodeistheuseofawebformtocollectdatafromusers.Oncethedataiscollected,itisprocessedandstoredintheserver-sidedatabaseusingADO.NET.ThefollowingoutlinesthebasicdesignofADO.NETinBSmode: 1.Establishadatabaseconnection:ADO.NETprovidesclassesforestablishingconnectionstodatabasesusingconnectionstrings.Theconnectionstringcontainsinformationaboutthedatabaseserver,thetypeofdatabase,andlogincredentials. 2.Executeaquery:Aqueryisarequestfordatafromadatabase.ADO.NETprovidesclassesforexecutingqueriesusingSQLorotherquerylanguages.Theresultsofthequeryarereturnedintheformofadatasetordatareader. 3.Processtheresults:Oncethequeryhasbeenexecuted,theresultsneedtobeprocessed.ADO.NETprovidesclassesforparsingdatasetsanddatareadersandformanipulatingdatainmemory. 4.Updatethedatabase:Afterprocessingthedata,itmaybenecessarytoupdatethedatabase.ADO.NETprovidesclassesforinserting,updating,anddeletingdatainadatabase. ApplicationofADO.NETinBSMode ADO.NETcanbeusedinawiderangeofapplicationsinBSmode.HerearesomeofthetypicalusecasesforADO.NET: 1.E-commercewebsites:E-commercewebsitestypicallystoreproductinformation,orderdetails,andcustomerdatainadatabase.ADO.N