These are, in some ways, similar to regular Unix-style accounts, but Postgres does not distinguish between users and groups and instead prefers the more flexible term “role”. Step 2 - Using PostgreSQL Roles and Databasesīy default, Postgres uses a concept called “roles” to handle authentication and authorization. Now that the software is installed and running, we can go over how it works and how it may be different from other relational database management systems you may have used.
If you’ve not done so recently, refresh your server’s local package index: Ubuntu’s default repositories contain Postgres packages, so you can install these using the apt packaging system. After completing this prerequisite tutorial, your server should have a non- root user with sudo permissions and a basic firewall. To follow along with this tutorial, you will need one Ubuntu 20.04 server that has been configured by following our Initial Server Setup for Ubuntu 20.04 guide. It also provides some instructions for general database administration.
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This guide demonstrates how to install Postgres on an Ubuntu 20.04 server. It’s standards-compliant and has many advanced features like reliable transactions and concurrency without read locks.
PostgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language. They provide a structured way to store, organize, and access information. Relational database management systems are a key component of many web sites and applications.
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