using System; using System.Data; using System.Data.SqlClient; using System.Data.OracleClient; using System.Data.Common; using System.Collections.Generic; using System.Linq; using Microsoft.Practices.EnterpriseLibrary.Data; using Microsoft.Practices.EnterpriseLibrary.Data.Oracle; using Microsoft.Practices.EnterpriseLibrary.Data.Sql; using System.Collections.Concurrent; using System.Configuration; using NLog; namespace DataAccessLayer { }