update docs

docs/30_Configuration/20_Database.md

@@ -149,3 +149,18 @@ env = ''
 
 # ----------------------------------------------------------------------
 ```
+
+## Database types
+
+Since March 2024 the database backup uses profiles that can define a database locally or remote. Database services that can be connected via tcp port to a target host can be accessed remotely as well now. You can setup a backup host in your network that fetches the databases from the other hosts or a doxker container.
+
+The following feature table is incomplete.
+
+| Action \ database type    | couchdb2  | mysql  | postgres | sqlite | ldap   |
+| ---                       |---        |---     |---       |---     |---     |
+| local database - dump     | ✅ yes    | ✅ yes | ✅ yes   | ✅ yes | ✅ yes |
+| local database - restore  | ✅ yes    | ✅ yes | ✅ yes   | ✅ yes | ❌ no  |
+| local docker - dump       | ✅ yes    | ✅ yes | ✅ yes   | ✅ yes | ❌ no  |
+| local docker - restore    | ✅ yes    | ✅ yes | ◻️ ???    | ✅ yes | ❌ no  |
+| remote database - dump    | ✅ yes    | ✅ yes | ✅ yes   | ❌ no  | ❌ no  |
+| remote database - restore | ✅ yes    | ✅ yes | ◻️ ???    | ❌ no  | ❌ no  |