Database with all the Continents, Countries, States and Cities of the

Hello, I’m new here on the forum, I’m developing a database with all the “Continents, Countries, States and Cities” in the world.

I wonder if this tool offers something like that?
can anybody help me?

Portugus BR ------
Olá, sou novo aqui no forum, estou desenvolvendo um banco de dados com todos os “Continentes, Países, Estados e Cidades” do mundo.

Gostaria de saber se essa ferramenta disponibiliza algo assim ?
alguém poderia me ajudar?

Do you aim to only have a hierarchical listing of alls that items, or even store each element’s geographical extent, and display that on a background map?

What database system are you planning to use? MongoDB? MariaDB ore some PostGIS stuff?