With Firebase
from Google, a free NoSQL database is available for Angular and Android.
The database
is free of charge for small and medium data volumes and promotions.
Operation:
After you
have created a project under Firebase, you will find the
data in the area: Realtime
Database
Then you
enter a new data node via the + sign as here : Tasks
Then you can
create more subentries and branches like in a tree using the + character of the
data node
Or create
small tables with complex structures/branches
