Power BI is a powerful business intelligence and data visualization tool developed by Microsoft that allows users to connect to various data sources, transform data, and create interactive reports and dashboards. While Power BI primarily uses Power Query for data transformation and DAX for calculations, SQL (Structured Query Language) is often used when connecting to relational databases such as SQL Server, Oracle, or MySQL. SQL enables users to retrieve, filter, and shape data directly at the source before it is loaded into Power BI for further analysis and visualization. Although each database system may include its own SQL extensions, standard SQL commands like SELECT, INSERT, UPDATE, DELETE, CREATE, and DROP are widely supported and can be used within Power BI’s query editor when working with database connections. This makes SQL a valuable tool for efficiently managing and preparing data before leveraging Power BI’s full analytical capabilities.