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在实现ERP等高端的ASP应用时,用户需要提供核心的经营资料,需要ASP商有很高的信用度。楼上说交互性不好,太牵强了吧。在微软提供的一套框架中,利用asp做网站,开发效率高,使用人数少,减少不必要的开销。交互性是互动方式,是有开发人员决定的。Basedontheinformationintheprevioussection,wehaveagoodunderstandingofwhatourdatabaseschemashouldlooklike.Thefollowingtableslistourdatabasestructure:
tblAuctionstblAuctionItems
AIDUniqueIDtokeeptrackofrecordsAutonumberIIDUniqueIDtokeeptrackofrecordsAutonumber
StartDateDatetheauctionstartedDate/TimeAIDWhichauctiondoesthisitembelongto?(ForeignkeytoAuctionstable)Integer
EndDateDatetheauctionistoendDate/TimeNameNameoftheitembeingsoldText
SellerIDTheIDoftheseller.(Foreignkeytousertable)IntegerDescriptionDescriptionoftheitembeingsoldText
MinPriceMinimumpricetosell(specifiedbytheseller)Money
tblAuctionBidsIncrementValuetoincrementproxybidsby(specifiedbytheseller)Money
BIDUniqueIDtokeeptrackofrecordsAutonumberAvailableNumberofitemsavailabletosellInteger
IIDUniqueIDtokeeptrackofitems(foreignkeytoAuctionItemtable)Integer
UIDUniqueIDtokeeptrackofbidders(foreignkeytoAuctionUserstable)IntegertblAuctionUsers
WinPriceCurrentpriceforauser(calculatedbyapplication)MoneyUIDUniqueIDtokeeptrackofrecordsAutonumber
MaxBidMaximumpriceforauserMoneyNameNameofuserText
BidItemsThenumberofitemsthisuserbidforInteger
WinItemsThenumberofitemsthisuserwouldwiniftheauctionendedimmediatelyInteger
TimeThelasttimethisbidwasupdatedDate/Time
Notethattheabovetablesaresimplyusedforexample.Youmaydecidetostoremoreinformationforyourpurposes(i.e.,youmaystoremorethanjustanameintheusertable).Already,however,theschemaisgettingkindofcomplex-eachtablehasforeignkeystooneormoreothertables.
NOTE:Youcanuseapre-existingusertableifyouwish.WesimplyprovidethetblAuctionUserstabledefinitionforcompletenesssake.
</p>强大的可扩展性。ASP具有强大的扩展性,可以实现与多种网络、硬件设备的连接:通过专用的通讯线路远程接入企业;通过远程拨号服务器为远程拨号客户提供服务;通过WAP为移动电话互联网客户服务。 |
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