diff --git a/libreplan-business/src/main/java/org/libreplan/business/common/daos/IAppPropertiesDAO.java b/libreplan-business/src/main/java/org/libreplan/business/common/daos/IAppPropertiesDAO.java
new file mode 100644
index 000000000..862d73a6a
--- /dev/null
+++ b/libreplan-business/src/main/java/org/libreplan/business/common/daos/IAppPropertiesDAO.java
@@ -0,0 +1,40 @@
+/*
+ * This file is part of LibrePlan
+ *
+ * Copyright (C) 2013 St. Antoniusziekenhuis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.libreplan.business.common.daos;
+
+import java.util.List;
+import java.util.Map;
+
+import org.libreplan.business.common.entities.AppProperties;
+
+/**
+ * Contract for {@link AppPropertiesDAO}
+ *
+ * @author Miciele Ghiorghis <m.ghiorghis@antoniusziekenhuis.nl>
+ */
+public interface IAppPropertiesDAO extends IGenericDAO<AppProperties, Long> {
+
+    List<AppProperties> getAll();
+
+    Map<String, String> findByMajorId(String majorId);
+
+    AppProperties findByMajorIdAndName(String majorId, String proprtyName);
+
+}