diff --git a/src/database/Classification.cpp b/src/database/Classification.cpp
new file mode 100644
index 00000000..63a8c602
--- /dev/null
+++ b/src/database/Classification.cpp
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2016 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Track.hpp"
+
+#include "Classification.hpp"
+
+namespace Database {
+
+Feature::Feature(Wt::Dbo::ptr<Track> track, const std::string& type, const std::string& value)
+: _type(type),
+_value(value),
+_track(track)
+{
+}
+
+Feature::pointer
+Feature::create(Wt::Dbo::Session& session, Wt::Dbo::ptr<Track> track, const std::string& type, const std::string& value)
+{
+	return session.add(new Feature(track, type, value));
+}
+
+std::vector<Feature::pointer>
+Feature::getByTrack(Wt::Dbo::Session& session, Track::id_type trackId, const std::string& type)
+{
+	Wt::Dbo::collection<pointer> res = session.find<Feature>().where("track_id = ? AND type = ?").bind( trackId).bind(type);
+	return std::vector<pointer>(res.begin(), res.end());
+}
+
+} // namespace Database
+