This book aims to provide an approachable introduction to Redis concepts by outlining many of the key-value store's commands so readers can learn their patterns and syntax, thus building up readers' understanding gradually. The goal for this book is to serve as an introduction to Redis for those interested in getting started with it, or key-value stores in general. For more experienced users, this book can function as a collection of helpful cheat sheets and in-depth reference.
This article compares and contrasts three of the most widely implemented open-source RDBMSs: SQLite, MySQL, and PostgreSQL. Specifically, it explores the data types that each RDBMS uses, their advantages and disadvantages, and situations where they are best optimized.
PostgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language. This guide demonstrates how to install Postgres on an Ubuntu 20.04 server. It also provides instructions for general database administration.