diff --git a/include/openbsc/db.h b/include/openbsc/db.h
new file mode 100644
index 0000000..9501ec8
--- /dev/null
+++ b/include/openbsc/db.h
@@ -0,0 +1,46 @@
+/* (C) 2008 by Jan Luebbe <jluebbe@debian.org>
+ * All Rights Reserved
+ *
+ * This program 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 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef _DB_H
+#define _DB_H
+
+#include <stdint.h>
+
+#define NUMBER_LENGTH 32
+
+typedef struct {
+    uint64_t imsi;
+    uint64_t tmsi;
+    char number[NUMBER_LENGTH];
+    uint16_t lac;
+} db_subscriber;
+
+int db_init();
+int db_prepare();
+int db_fini();
+
+int db_insert_imei(uint64_t imei);
+
+int db_insert_imsi(uint64_t imsi);
+int db_imsi_set_tmsi(uint64_t imsi, uint64_t tmsi);
+int db_imsi_set_lac(uint64_t imsi, uint16_t lac);
+int db_imsi_get_subscriber(uint64_t imsi, db_subscriber* subscriber);
+int db_tmsi_get_subscriber(uint64_t tmsi, db_subscriber* subscriber);
+
+#endif /* _DB_H */