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Add content to ETL (#2647)

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* Update 101-etl-datawarehouses.md

* Add content to ETL datawarehouses

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
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Tomasz Hamerla
2022-10-21 15:27:46 +02:00
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content/roadmaps/114-software-architect/content/109-working-with-data/101-etl-datawarehouses.md
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# Etl datawarehouses # ETL Datawarehouses
In the world of data warehousing, if you need to bring data from multiple different data sources into one, centralized database, you must first:
* **EXTRACT** data from its original source
* **TRANSFORM** data by deduplicating it, combining it, and ensuring quality, to then
* **LOAD** data into the target database
ETL tools enable data integration strategies by allowing companies to gather data from multiple data sources and consolidate it into a single, centralized location. ETL tools also make it possible for different types of data to work together.
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.snowflake.com/guides/what-etl'>What is ETL?</BadgeLink>
<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=OW5OgsLpDCQ'>ETL explained</BadgeLink>