<connectionStrings>    <add name="OADBConnectionString" connectionString="Data Source=HONG-PC\SQL2005;Initial Catalog=OADB;User ID=sa;Password=123456" providerName="System.Data.SqlClient" />        <add name="SqlServerConnectionString" connectionString="Data Source=127.0.0.1\sqlserver2008r2;Initial Catalog=Website;Integrated Security=False;User ID=sa;Password=Yk.888888;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False" providerName="System.Data.SqlClient"/>        <add name="OledbConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\access.mdb;Persist Security Info=True" providerName="System.Data.OleDb"/>        <add name="OracleConnectionString" connectionString="DATA SOURCE=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521))(CONNECT_DATA=http://www.mamicode.com/(SERVICE_NAME=WebSite)));PASSWORD=a123456;PERSIST SECURITY INFO=True;USER ID=WebSiteDataDeveloper" providerName="Oracle.DataAccess.Client"/>    </connectionStrings>