# Mastering Rell · Learn Chromia

> Go deep on Rell entities, operations and queries to build production-ready Chromia dapps.

Source: https://chromia.com/learn/rell-masterclass/

[Learn](https://chromia.com/learn/)Mastering Rell

# Mastering Rell

Go deep on Rell entities, operations and queries to build production-ready Chromia dapps.

8 lessons

[Start course](https://chromia.com/learn/rell-masterclass/introduction/)

**0** / 8lessons done

1. [01Mastering Rell](https://chromia.com/learn/rell-masterclass/introduction/)
2. [02Comparing SQL tables and Rell entities](https://chromia.com/learn/rell-masterclass/entities/)
3. [03Code optimization example](https://chromia.com/learn/rell-masterclass/example/)
4. [04Keys and indexes](https://chromia.com/learn/rell-masterclass/indexes/)
5. [05INNER JOIN statement](https://chromia.com/learn/rell-masterclass/join/)
6. [06SELECT statement](https://chromia.com/learn/rell-masterclass/select/)
7. [07Subqueries](https://chromia.com/learn/rell-masterclass/sub-queries/)
8. [08UPDATE statement](https://chromia.com/learn/rell-masterclass/update/)