Object Relational Persistence in .NET

using System;
using System.Data;
using System.Data.Common;
using System.Data.SqlClient;
using System.Data.OracleClient;
using System.Configuration;
using System.Web.Configuration;

namespace Research
{
	public class DbConnectionStore
	{
		public static DbConnectionStore TheInstance = new DbConnectionStore();

		private DbConnectionStore()
		{
		}

		public DbConnection GetConnection(string cnHint)
		{
			ConnectionStringSettings cnSettings = DbConnectionStore.TheInstance.GetConnectionStringSettings(cnHint);
			DbProviderFactory providerFactory = DbProviderFactories.GetFactory(cnSettings.ProviderName);
			DbConnection cn = providerFactory.CreateConnection();
			cn.ConnectionString = cnSettings.ConnectionString;
			cn.Open();

			return cn;
		}

		public ConnectionStringSettings GetConnectionStringSettings(string cnHint)
		{
			ConnectionStringsSection connectionStringsSection = WebConfigurationManager.GetSection("connectionStrings") as ConnectionStringsSection;
			ConnectionStringSettingsCollection connectionStrings = connectionStringsSection.ConnectionStrings;
			ConnectionStringSettings connStringSettings = connectionStrings[cnHint];
			return connStringSettings;
		}
	}
}