diff -r 000000000000 -r bde4ae8d615e os/persistentdata/persistentstorage/store/pcstore/inc/uid.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/persistentdata/persistentstorage/store/pcstore/inc/uid.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,44 @@
+// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#if !defined(__UID_H__)
+#define __UID_H__
+
+#include <pcstore/pcstoredef.h>
+
+namespace PCStore
+{
+#define KNullUid TUid::Null()
+
+/**
+@internalAll
+
+A globally unique 32-bit number.
+*/
+class TUid
+	{
+public:
+	TBool operator==(const TUid& aUid) const;
+	TBool operator!=(const TUid& aUid) const;
+	static TUid Null();
+
+public:
+	/**
+	The 32-bit integer UID value.
+	*/
+	TInt32 iUid;
+	};
+}
+#endif // !defined(__UID_H__)