> For the complete documentation index, see [llms.txt](https://wiki.nushackers.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.nushackers.org/orbital/relational-database.md).

# Relational Database

This section will introduce you the essentials of (relational) database and help you kickstart your project.

You can expect to learn about:

* Database Overview
* Relational VS Non-relational
* Entity Relationship Diagram
* Relational Database Design Principles
* SQL (CRUD, aggregate queries, nested queries)
* Using PostgreSQL