What is PostgreSQL and what are some alternative relational databases?
PostgresSQL is a relational database management system. SQLite SQLBase are some alternative relational databases
What are some advantages of learning a relational database?
A quality of many relational databases is that they support good guarantees about data integrity. They can store and modify data in a way that makes data corruption as unlikely as possible. They are also the most widely used.
What is one way to see if PostgreSQL is running?
using the top command in the terminal