Connection Strings - SQL Server

DescriptionExample
SQL Server AuthenticationData Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=myPassword;
Windows AuthenticationData Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=SSPI;

For much more detail, see www.connectionstrings.com

Entity Data Model

<add
  name="EntityDataModel"
  connectionString="metadata=res://*/EntityDataModel.csdl|res://*/EntityDataModel.ssdl|res://*/EntityDataModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;myConnectionString&quot;"
  providerName="System.Data.EntityClient"
  />