postgres-intro

Question 1

What is PostgreSQL and what are some alternative relational databases?

Answer 1

PostgreSQL is a powerful, free, open source Relational Database Management System (RDBMS).
Other popular relational databases include MySQL (also free), SQL Server by Microsoft, and Oracle by Oracle Corporation.

Question 2

What are some advantages of learning a relational database?

Answer 2

Keeping data integrity.
SQL language is a very portable skill given that there are so many relational databases driven by almost the same language.

Question 3

What is one way to see if PostgreSQL is running?

Answer 3

top command (to list the currently running processes)
Execute sudo service postgresql status command while Postgres is running.