Строки подключения к локальным БД

<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="Positions" connectionString="Server=.\SQLEXPRESS;Initial Catalog=Positions_12;Integrated Security=True;" providerName="System.Data.SqlClient"/>
    <add name="DefaultConnection" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\aspnet-PositionsMvc_01-20140818100456.mdf;Initial Catalog=aspnet-PositionsMvc_01-20140818100456;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" />
  </connectionStrings>
  <appSettings></appSettings>
  <system.web>

<add name="Positions" connectionString="Server=192.168.10.6;Initial Catalog=Positions_12;user=sa;password=qwerty" providerName="System.Data.SqlClient"/>

<add name="Positions" connectionString="Server=192.168.10.6;Initial Catalog=Positions_12;Integrated Security=True;" providerName="System.Data.SqlClient"/>