Learn SQL
Structured Query Language (SQL) is used for extracting and communicating with large databases. One should focus on understanding the different types of normalization, writing nested queries, using co-related questions, group-by, performing join operations, etc., on the data and extract in raw format. This data will then further be cleaned either in Microsoft Excel or by using Python libraries.
- Freecodecamp SQL (Recommended)
- Intro To SQL By Kaggle (Recommended)
- Advanced SQL By kaggle
- Edureka’s SQL Playlist
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A Guide On How To Become A Data Scientist (Step By Step Approach) - KDnuggets
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