A database is a collection of information that is electronically stored in a particular way for easy access. PostgreSQL is a database management system (DBMS), a tool used for retrieving information from the database using Structured Query Language (SQL).
PostgreSQL is a powerful open-source object-relational database management systems (ORDBMS) that comes packed with many features and it is free to use. This is an introductory screen for anyone who is interested in learning about the Structured Query Language using PostgreSQL.