Windchill业务类面向对象的程序设计（OOP），通过继承划分功能：公共的功能——父类(公共的类)专用的功能——子类(专用的类)信息对象包含业务数据包含模型信息数据库层指定的实例逻辑对象包含业务逻辑执行业务规则层之间对象的动作业务信息对象包含简单的数据和逻辑非常轻量级的易于层之间的传递PersistenceManager=业务逻辑类Persistable=定义业务数据类的接口，服从于PersistenceManager定义业务类的功能大部分具有一个相应的服务类在Windchill系统中添加类，您必须扩展或执行这些接口Windchill基础类Windchill常用接口Windchill常用包wt.fc接口保存数据业务对象服从域管理和访问控制业务对象服从访问控制、域的管理和通知规则通用的业务信息对象通用的业务信息对象ObjectToObjectLink(abstract)AbstractclassthatrepresentsanassociationbetweentwoPersistableobjects.EachPersistableisreferencedbyanObjectReference.ObjectToVersionLink(abstract)providesabinarytypeoflinkbetweenaversionobject(roleA)andapersistableobject(roleB).Whenusedinnavigatingfromtheversionobjecttoitsassociatedpersistableobject,onlythelatestiterationisfound.Navigatingfromthepersistableobjecttoitsassociatedversionobjectactsatypicalnavigation,butisapplicableonlyfromthelatestiteration.VersionToObjectLink(abstract)VersionToVersionLink(abstract)providesabinarytypeoflinkbetweentwoversions.Navigatingbetweenthemisapplicableonlyfromthelatestiterationoneitherside,andresultsinfindingtheotherside'slatestiteration.IteratedUsageLink(abstract)实现wt.fc.ObjectToObjectLinkTheIteratedUsageLinkisanassociationbetweenaniterationandamaster.Itisgenerallyhomogeneousinnatureandisusedtobuildstructures.IteratedReferenceLink实现wt.fc.ObjectToObjectLinkAlinkspecifyingthataniteration(implementation)referstoanothermaster.Thislinkisgenerallyheterogeneousinnatureandisnotusedtobuildstructures.CheckoutLink实现wt.fc.ObjectToObjectLink接口Providesthelinkbetweenanoriginalcheckedoutobjectanditsworkingcopy.SubFolderLink实现ObjectToObjectLinkProvidesapersistentassociationbetweenaSubFolderwithit'sparentFolder.ThisclassprovidesanoptimizationforlocatingallthesubfolderswithinaFolderandmeansfortheuniqunessconstraintonSubFoldernameswithinaFolder.ContentItem(abstract)ApplicationDataURLDataWTContainerWTLibrary（wt.inf.library）PDMLinkProduct（wt.pdmlink）Project2（wt.projmgmt.admin）带Identity和Content的版本控制对象文档相关关联对象WTPartWTPartMasterWTP