SQL and Relational Database Fundamentals for Business Analysis

Extracting meaningful insights from business data requires more than just copying script templates—it demands a solid grasp of how databases store, structure, and process information. This course helps you understand the inner workings of relational databases and write intentional SQL queries with confidence. You will start by learning core database concepts, entity relationships, and foundational data types before diving into practical query construction. Through clear written explanations and step-by-step code snippets, you will build a durable foundation in data querying for real-world decision-making. What you'll learn: - Understand core relational database concepts, tables, primary keys, and foreign keys. - Write clean SQL queries using SELECT, WHERE, GROUP BY, and HAVING clauses. - Combine multiple tables seamlessly using INNER, LEFT, and FULL JOIN operations. - Apply aggregation functions and basic window functions to summarize business metrics. - Structure complex query logic efficiently using Common Table Expressions (CTEs). - Analyze query execution order to troubleshoot unexpected results and write cleaner code. The content begins with essential database definitions and syntax fundamentals before progressing through intermediate aggregation techniques, multi-table joins, and modern querying patterns. This text-based course is designed for beginners, aspiring data analysts, and business professionals with no prior database experience. Take your first step today toward transforming raw database tables into actionable business intelligence.