1.SQLServer：
<connectionStrings> <add name="EntityDesignEntities" connectionString="metadata=res://*/EntityDataModel.EntityDesign.csdl|res://*/EntityDataModel.EntityDesign.ssdl|res://*/EntityDataModel.EntityDesign.msl;provider=System.Data.SqlClient;provider connection string="data source=.;initial catalog=DevBase;persist security info=True;user id=sa;password=xxx;multipleactiveresultsets=True;App=EntityFramework"" providerName="System.Data.EntityClient" /> </connectionStrings>
2.Oracle：
<connectionStrings> <add name="EntityDesignEntities" connectionString="metadata=res://*/EntityDataModel.EntityDesign.csdl|res://*/EntityDataModel.EntityDesign.ssdl|res://*/EntityDataModel.EntityDesign.msl;provider=Oracle.DataAccess.Client;provider connection string="data source=xe;password=xxx;persist security info=True;user id=sa"" providerName="System.Data.EntityClient"/> </connectionStrings>
3.MySQL:
EntityFramework在不同数据库下的配置,布布扣,bubuko.com
原文：http://www.cnblogs.com/siyunianhua/p/3572564.html