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README.md

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 # Practice_ETL_QA_analyst
 This project use Apache Airflow, GitHub action CICD, excel, sql, docker and python
+
+# Scenario user story
+Ensure that customer order data is correctly loaded into the database so that I can analyze purchasing patterns.
+
+**Acceptance Criteria:**
+The Customer_ID must be unique.
+The Product_ID must exist in the Products table.
+The Quantity must not be negative.
+The Order_Date must be valid and in the correct format (YYYY-MM-DD).
+The Customer_Name must not be empty.