diff --git a/README.md b/README.md
index 22da2ee..c7fbbbb 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,23 @@
 - https://hub.docker.com/r/openhab/openhab/
 - https://github.com/openhab/openhab-docker
 
+### Database
+
+Connect to database container:
+```
+source openhab.conf
+mariadb -h 172.55.55.101 -uopenhab -p${OPENHAB_DATABASE_PASSWORD} openhab
+```
+
+Install the `jdbc:mariadb` persistence service and add the following lines to `data/conf/services/jdbc.cfg`:
+```
+url=jdbc:mariadb://db-openhab:3306/openhab
+user=openhab
+password=dbpw
+```
+Replace `dbpw` with your password from `openhab.config`.
+
+
 ### weather binding
 Copy these folders:
 - `webapps/weather-data/layouts` -> `./data/userdata/webapps/weather-data/layouts`