Name the process in which a A datewarehouse is updated regularlya.Data Scrubbingb.ETLc.Data Cleaningd.STL
Question
Name the process in which a Data Warehouse is updated regularly:
- a. Data Scrubbing
- b. ETL
- c. Data Cleaning
- d. STL
Solution
The process in which a data warehouse is updated regularly is known as ETL (Extract, Transform, Load).
Here's a step-by-step explanation:
-
Extraction: This is the first step in the process. Data is extracted from various sources, which can be in different formats (like text files, databases, etc.).
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Transformation: Once the data is extracted, it is then transformed into a format that can be easily analyzed. This could involve cleaning up the data, aggregating it, and making it consistent.
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Loading: The final step is to load the transformed data into the data warehouse, where it can be accessed and analyzed.
So, the correct answer is b. ETL.
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