How flexible is metadata?

[latot]

Hi all! I has been looking in a app to be able to organize dbs and metadata, and I reach GeoNode which seems be able to do a lot of things! including metadata.

I need on the database comment the dbs, schemas, tables, columns, and not only that, there is more data than spatial one.
And the column metadata is not only a description, it can also have the type, units, and other data that can be in json to be used by other apps.

One concept of what I'm looking, is be able to organize projects using an app, so is not only tags, we can have tags hat builds other tags, comments, unique ids to write workflows, automated views and that type of things.

Most of what I wrote depends mostly on Geonode flexibility and essentially Metadata, in a very non-standard way.

What from what I wrote can be done, and what can not be done with GeoNode?