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diff --git a/odb/semantics/relational/changeset.hxx b/odb/semantics/relational/changeset.hxx
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+++ b/odb/semantics/relational/changeset.hxx
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+// file      : odb/semantics/relational/changeset.hxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : GNU GPL v3; see accompanying LICENSE file
+
+#ifndef ODB_SEMANTICS_RELATIONAL_CHANGESET_HXX
+#define ODB_SEMANTICS_RELATIONAL_CHANGESET_HXX
+
+#include <odb/semantics/relational/elements.hxx>
+
+namespace semantics
+{
+  namespace relational
+  {
+    class changeset: public qscope
+    {
+    public:
+      typedef relational::version version_type;
+
+      version_type
+      version () const {return version_;}
+
+    public:
+      changeset (version_type v): version_ (v) {}
+      changeset (xml::parser&, graph&);
+
+      virtual string
+      kind () const {return "changeset";}
+
+      virtual void
+      serialize (xml::serializer&) const;
+
+    public:
+      using qscope::add_edge_left;
+      using qscope::add_edge_right;
+
+    private:
+      version_type version_;
+    };
+  }
+}
+
+#endif // ODB_SEMANTICS_RELATIONAL_CHANGESET_HXX