include: Add dbcses.idl.
diff --git a/include/dbcses.idl b/include/dbcses.idl
new file mode 100644
index 0000000..5441815
--- /dev/null
+++ b/include/dbcses.idl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2009 Huw Davies
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+[
+    object,
+    uuid(0c733a5d-2a1c-11ce-ade5-00aa0044773d),
+    pointer_default(unique)
+]
+interface IDBCreateSession : IUnknown
+{
+    [local]
+    HRESULT CreateSession([in] IUnknown *pUnkOuter,
+                          [in] REFIID riid,
+                          [out, iid_is(riid)] IUnknown **ppDBSession);
+
+    [call_as(CreateSession)]
+    HRESULT RemoteCreateSession([in] IUnknown *pUnkOuter,
+                                [in] REFIID riid,
+                                [out, iid_is(riid)] IUnknown **ppDBSession,
+                                [out] IErrorInfo **ppErrorInfoRem);
+}