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Welcome to Module 3: Introduction to SQL. In this module, we'll embark on a journey to understand SQL – the language underpinning relational databases. You'll discover why SQL is crucial in database environments, as we differentiate between its variants like MS SQL and MySQL, and demystify the art of crafting basic SQL SELECT statements. We'll delve into the history of SQL, tracing its origins from the 1970s at IBM to becoming the de facto standard for managing relational databases. Understanding SQL's declarative nature will empower you to express what you want from a database without delineating how to achieve it, a paradigm shift from procedural programming languages. By the end of this module, you'll gain a solid foundation in SQL's data definition and manipulation capabilities, setting the stage for more complex data interactions. Whether you're defining new tables or querying data, the insights from this module will equip you with the knowledge to navigate and manipulate database environments effectively.