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A legacy data stack usually refers to the traditional relational database management system (RDBMS), which uses a structured query language (SQL) to store and process data. While an RDBMS can still be used in a modern data stack, it is not as common because it is not as well-suited for managing big data.
Roles of data professionals Various professionals contribute to the data science ecosystem. Datascientists are the primary practitioners, employing methodologies to extract insights from complex datasets. Essential technical skills Data preparation and mining: Proficiency in cleaning and organizing data effectively.
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