# dbt day 2 lecture

> In this video, Bruno provides a quick recap of the previous discussion on models and introduce the concept of dbt optimization. He explains how dbt sends queries to run your data warehouse and discuss the use of incremental models to transform small amounts of data. He also touches on the differenc…

- Web page: https://www.dataexpert.io/lesson/dbt-day-2-lecture
- Program: [Data Engineering Mastery Course](https://www.dataexpert.io/program/data-engineering-mastery-course)
- Module: DBT
- Access: Requires enrollment in Data Engineering Mastery Course
- Length: 36 min video
- Skills: SQL, Data Modeling, ETL/ELT, dbt
- Academy: DataExpert.io Academy

## About this lesson

In this video, Bruno provides a quick recap of the previous discussion on models and introduce the concept of dbt optimization. He explains how dbt sends queries to run your data warehouse and discuss the use of incremental models to transform small amounts of data. He also touches on the difference between merge and delete plus insert, as well as the importance of query performance optimization.

## Navigation

- Previous lesson: [dbt day 1 lab](https://www.dataexpert.io/lesson/dbt-day-1-lab.md)
- Next lesson: [dbt day 2 lab](https://www.dataexpert.io/lesson/dbt-day-2-lab.md)