Data Modeling: Structuring Information for Analysis
Why This Matters Bad schema: orders: id, customer_name, customer_email, product_name, product_price, quantity, total Problems: – Customer data duplicated in every order – Update customer email → must update 1000 order rows – Product price change → old orders show wrong price – Inconsistencies inevitable Good schema: customers: id, name, email products: id, name, price orders: […]
Data Modeling: Structuring Information for Analysis Read More »