diff --git a/bin/update.sh b/bin/update.sh
new file mode 100644
index 0000000..4447bb2
--- /dev/null
+++ b/bin/update.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+echo "Started..."
+#Started...
+#
+# special variable $# is the number of arguments
+if [ $# -lt 4 ] ; then
+    echo 'Call ./<script> <db name> <db user> <db schema> <db gtfs schema>'
+    exit 1
+fi
+#
+DB_NAME="$1"
+echo "DB_NAME: $DB_NAME"
+DB_USER="$2"
+echo "DB_USER: $DB_USER"
+DB_SCHEMA="$3"
+echo "DB_SCHEMA: ${DB_SCHEMA}"
+DB_SCHEMA_GTFS="$4"
+echo "DB_SCHEMA_GTFS: ${DB_SCHEMA_GTFS}"
+#
+psql -h localhost -p 5432 -U $DB_USER -f ./sql/update.sql -d $DB_NAME -v schema_gtfs=$DB_SCHEMA_GTFS -v schema=$DB_SCHEMA
+#
+echo "Done."
+#done.
diff --git a/sql/update.sql b/sql/update.sql
new file mode 100644
index 0000000..aff5834
--- /dev/null
+++ b/sql/update.sql
@@ -0,0 +1,30 @@
+---clean up schema
+DROP SCHEMA IF EXISTS :schema CASCADE;
+
+CREATE SCHEMA IF NOT EXISTS :schema;
+CREATE SCHEMA IF NOT EXISTS :schema_gtfs;
+SET search_path to :schema, :schema_gtfs, public;
+
+---get subset of stops with location type 0
+
+---create views
+CREATE OR REPLACE VIEW :schema.vw_stops_lt_0 AS
+SELECT * FROM :schema_gtfs.stops WHERE location_type=0;
+
+---create tables
+CREATE TABLE IF NOT EXISTS :schema.tbl_stops_lt_0 AS SELECT stop_id,stop_name,stop_lat,stop_lon,the_geom FROM :schema.vw_stops_lt_0;
+
+---get subset of stops that do not comply with a proper Global ID
+
+---create views
+CREATE OR REPLACE VIEW :schema.vw_stops_not_dhid AS
+SELECT * FROM :schema_gtfs.stops WHERE stop_id NOT LIKE '%:%:%' ORDER BY stop_id;
+
+CREATE OR REPLACE VIEW :schema.vw_stops_lt_0_not_dhid AS
+SELECT * FROM :schema.tbl_stops_lt_0 WHERE stop_id NOT LIKE '%:%:%' ORDER BY stop_id;
+
+---create tables
+CREATE TABLE IF NOT EXISTS :schema.tbl_stops_not_dhid AS SELECT stop_id,stop_name,stop_lat,stop_lon,the_geom FROM :schema.vw_stops_not_dhid;
+
+CREATE TABLE IF NOT EXISTS :schema.tbl_stops_lt_0_not_dhid AS SELECT stop_id,stop_name,stop_lat,stop_lon,the_geom FROM :schema.vw_stops_lt_0_not_dhid;
+