WordPress database plugin for own data

I’m looking for a WordPress plugin to manage and store data (preferably in a separate database, or at least a separate table from the rest of WordPress ). Something along the lines of Caspio Bridge or Zoho Creator, but much simpler. I don’t need to be able to do much with it (at the moment) – just import/export csv and search through it.

Whenever I try and search for anything to do with databases and WordPress all I get is information on it’s database, so hoping someone here will have some suggestions!