> For the complete documentation index, see [llms.txt](https://tmdarneille.gitbook.io/seirfx/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tmdarneille.gitbook.io/seirfx/unit-2/express-sequelize.md).

# Sequelize

## Objectives

* Identify an ORM
* Weigh pros and cons between ORMs and raw SQL queries
* Use the Sequelize CLI to create and migrate models
* Utilize Sequelize to create, find, and delete database records
* Explain the purpose of promises and their use in Sequelize

We learned the basics about relational databases (PostgreSQL) and used SQL to query from databases. Now, we're going to incorporate a relational databse into an Express application. But first, some terminology.