Erlang Programming/Database Programming
Databases in Erlang 
Data can be stored in many ways in Erlang. Each process has a local dictionary that uses put and get.
2> put(hello,world). undefined 3> get(hello). world
Data can be stored with the ETS (Erlang table storage system) via the ETS library. It creates data at the process level. See Using_Ets.
Mnesia is a distributed database that lives in the local file system.