first working version of zugferd rest service

WEBSERVICES/ZUGFeRDRESTService/IDatabase.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using DigitalData.Modules.Database;
+using DigitalData.Modules.Interfaces;
+
+namespace ZUGFeRDRESTService
+{
+    public interface IDatabase
+    {
+        public MSSQLServer MSSQL { get; set; }
+        public Firebird Firebird { get; set; }
+
+        public string GetGDPictureKey();
+        public Dictionary<String, XmlItemProperty> GetPropertyMap();
+    }
+}