# Relational Databases ### What to expect from this training You will have an understanding of what relational databases are, their advantages, and some MySQL specific concepts. ### What is not covered under this course * In depth implementation details * Advanced topics like normalization, sharding * Specific tools for administration ### Introduction The main purpose of database systems is to manage data. This includes storage, adding new data, deleting unused data, updating existing data, retrieving data within a reasonable response time, other maintenance tasks to keep the system running etc. ### Prerequisites * Complete [Linux course](/linux_basics/intro/) * Install Docker (for lab section) ### Pre-reads [RDBMS Concepts](https://beginnersbook.com/2015/04/rdbms-concepts/)