IBM Data Science Practice Test 2025 – Comprehensive Exam Prep

The primary function of SQL (Structured Query Language) in the context of data science is to manage and manipulate databases. SQL is specifically designed to interact with relational database management systems, allowing data scientists to execute queries to retrieve, insert, update, or delete data stored in databases. This capability is crucial for data preparation and preprocessing, which are foundational steps in any data analysis or machine learning project.

By utilizing SQL, data scientists can efficiently handle large datasets, perform complex queries, and ensure data integrity. The ability to filter, sort, and aggregate data enables meaningful analysis, making SQL a vital tool in managing the underlying data that drives insights in data science initiatives.

While statistical analysis, data visualization, and data storage in cloud services are important aspects of data science, they either depend on the data being appropriately managed using SQL or involve other specialized tools and languages suited for those specific tasks. Therefore, the choice that highlights SQL's core purpose aligns perfectly with its function in the data science workflow.