Learn how to transform a single merged table into a star schema using Power Query in Excel. The post explains the concept of database normalization and its benefits in organizing data to eliminate redundancy. It demonstrates how to create separate lookup or dimension tables for customer, store, and product information, improving data integrity and scalability. The guide also covers advanced steps like splitting the transactions table into order-level and line-item-level tables, achieving second normal form, and further normalization into snowflake schemas, which optimize data for various analytical tasks.
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