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diff --git a/OpenSim/Data/Migrations/Migration.cs b/OpenSim/Data/Migrations/Migration.cs
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+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.IO;
+using System.Reflection;
+
+namespace OpenSim.Data.Migrations
+{
+    /// <summary> 
+    ///
+    /// The Migration theory is based on the ruby on rails concept.
+    /// Each database driver is going to be allowed to have files in
+    /// Resources that specify the database migrations.  They will be
+    /// of the form:
+    ///
+    ///    001_Users.sql
+    ///    002_Users.sql
+    ///    003_Users.sql
+    ///    001_Prims.sql
+    ///    002_Prims.sql
+    ///    ...etc...
+    ///
+    /// When a database driver starts up, it specifies a resource that
+    /// needs to be brought up to the current revision.  For instance:
+    ///
+    ///    Migration um = new Migration("Users");
+    ///    um.Upgrade(dbconnection);
+    ///
+    /// This works out which version Users is at, and applies all the
+    /// revisions past it to it.  If there is no users table, all
+    /// revisions are applied in order.  Consider each future
+    /// migration to be an incremental roll forward of the tables in
+    /// question.
+    ///
+    /// </summary>
+
+    public class Migration
+    {
+        private string _type;
+
+        public Migration(string type)
+        {
+            _type = type;
+        }
+
+
+    }
+
+    
+}
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