In this repository you can find the exercises solved from the Udacity course "Intro to Relational Databases" as follows:
https://eu.udacity.com/course/intro-to-relational-databases--ud197
Basically I've worked with Python and PostgreSQL.
For installing PostgreSQL: https://www.digitalocean.com/community/tutorials/como-instalar-y-utilizar-postgresql-en-ubuntu-16-04-es