Imagine you have a messy box of toys. Some toys are repeated, some are broken, and some are all mixed up. You want to organize them so that everything is easy to find and use. That’s exactly what data normalization does for information. Data Normalization: Normalization means: Cleaning data Reducing duplicates Making information consistent Splitting big messy tables into smaller, neat ones. Think of data normalization like organizing your home. SQL → putting toys in separat

Introduction Business Intelligence (BI) tools like Tableau and Power BI help companies make decisions based on data. But these tools work best only when the data is prepared and delivered properly. One of the most important part behind BI systems is the stored procedure. Stored procedures are pre-written SQL scripts stored in the database that perform data operations before sending results to BI tools. Instead of running complex SQL queries directly from the dashboard, BI to