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Stored Procedures and Triggers
6.1OverviewBusiness logic that lives in the database — stored procedures, functions, and triggers — must be tested like any other code. These are…6.2Why Business Logic in the Database?The trade-off: database logic is harder to version control, harder to test, and harder to debug than application code. This is exactly why…6.3Testing Stored Procedures6.4Testing TriggersTriggers run automatically when data is inserted, updated, or deleted. They are invisible to the application — which makes them especially…6.5Testing Computed/Derived ValuesSome systems compute values in the database (materialized views, generated columns):6.6Testing Procedure Error Handling6.7Practical Exercise1. Write tests for a calculate_order_total function: normal case, empty order, large numbers, precision 2. Write tests for an updated_at…6.8Key Takeaways- Database business logic (procedures, triggers) must be tested like application code - Test edge cases: empty inputs, large numbers…