# Data warehouse

Centralized repository that stores large amounts of data from various sources.<br/>
It possibly stores the data in structured and organized ways that are optimized for data analysis and generation of
reports and insights.

1. [TL;DR](#tldr)
1. [Further readings](#further-readings)

## TL;DR

Operational systems upload the data, which may require cleansing.

The two main workflows for data warehouse systems are:

- _Extract, Transform, Load_ (ETL).
- _Extract, Load, Transform_ (ELT).

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## Further readings

- [What is a data warehouse?]
- [Snowflake]

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[snowflake]: snowflake/README.md

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[What is a data warehouse?]: https://www.ibm.com/think/topics/data-warehouse
