Yes in a way. There are a bit more layers in-between. In fact, you can see it as 2 decoupled kinds of database: - the storage database - the working in-memor

Yes in a way. There are a bit more layers in-between. In fact, you can see it as 2 decoupled kinds of database: - the storage database - the working in-memory UI database that holds the data represented (e.g. on your screen (GUI)). The goal in general is to modify the data contained in this UI database and then to push the changes to storage.