diff --git a/Sources/OpenLibraryWrapper/Program.cs b/Sources/OpenLibraryWrapper/Program.cs
index fdd216e..a58c4c5 100644
--- a/Sources/OpenLibraryWrapper/Program.cs
+++ b/Sources/OpenLibraryWrapper/Program.cs
@@ -15,11 +15,20 @@ var builder = WebApplication.CreateBuilder(args);
 
 switch(dto)
 {
-    case "Wrapper":
+    case "WRAPPER":
         builder.Services.AddSingleton<IDtoManager, OpenLibClientAPI>();
         break;
-    case "Database":
-        builder.Services.AddSingleton<IDtoManager, MyLibraryMgr>();
+    case "DATABASE":
+        string db_server = (string)System.Environment.GetEnvironmentVariable("DBSERVER", System.EnvironmentVariableTarget.Process);
+        string db_name = (string)System.Environment.GetEnvironmentVariable("DBNAME", System.EnvironmentVariableTarget.Process);
+        string db_user = (string)System.Environment.GetEnvironmentVariable("DBUSER", System.EnvironmentVariableTarget.Process);
+        string db_password = (string)System.Environment.GetEnvironmentVariable("DBPASSWORD", System.EnvironmentVariableTarget.Process);
+
+        string dbParams = $"server={db_server};port=3306;database={db_name};user={db_user};password={db_password};";
+        
+        builder.Services.AddSingleton<IDtoManager, MyLibraryMgr>(
+            x=> new MyLibraryMgr(dbParams)
+        );
         break;
     default:
         builder.Services.AddSingleton<IDtoManager, Stub>();