Package configurations let you set properties on package objects during package development , and then update the properties at run time as required 通过包配置，您可以在包开发期间设置包对象的属性，然后在运行时根据需要更新属性。
If the package includes configurations that you want to modify for use on the destination computer , you can update the values of the properties by using the wizard 如果包包括要进行修改以便在目标计算机上使用的配置，您可以使用该向导更新属性的值。
In this lesson , you will expand the package you created in lesson 2 to use a package configuration , variable , and property expression to dynamically update a property 在本课中，将扩展第2课中创建的包，使用包配置、变量和属性表达式来动态更新属性。
Showed you how to set up a basic application in which an end user could view properties , and the administrator could add , remove , and update properties 向您显示了如何安装一个基本的应用程序，在这个应用程序里面，终端用户可以查看属性，并且管理员可以添加、移除和更新属性。
Some project defaults derive from the style sheets that are applied when you update properties in the project defaults section of the general project configuration page see 某些项目默认设置是从样式表导出的，这些样式表是在常规项目配置页的“项目默认设置”节中更新属性时应用的样式表，请参见
Command prompt utility , you can generate the strings that represent the property paths by running the package configuration wizard and then copy and paste them into the command prompt window for use with the set option of 命令提示符实用工具在运行包时更新属性，则可以通过运行包配置向导来生成表示属性路径的字符串，然后将它们复制并粘贴到命令提示符窗口中，以便用于
User - defined variables can be used in many ways in ssis : in scripts ; in the expressions used by precedence constraints , the for loop container , the derived column transformation , and the conditional split transformation ; and in the property expressions that update property values 在ssis中，可以通过很多方式使用用户定义的变量：在脚本中；在由优先约束、 for循环容器、派生列转换和条件性拆分转换使用的表达式中；以及在更新属性值的属性表达式中。
