Kuidas teostatakse andmebaasi kontroll testija vaatepunktist?

The database verification from a tester's perspective includes several key aspects:

• Data validation: checking the correctness and integrity of data being written to and read from the database.
• CRUD operations testing: testing creation, reading, updating, and deletion of data through the application's interface or directly via queries.
• Relationship testing: verifying the correctness of relationships between tables (e.g., foreign keys).
• Index and performance testing: assessing query execution speed and proper use of indexes.
• Transaction testing: verifying atomicity, consistency, isolation, and durability (ACID).

Example of verification using SQL queries:

-- Check if the record was successfully added
SELECT * FROM users WHERE id = 123;

-- Relationship check
SELECT orders.id, users.name FROM orders JOIN users ON orders.user_id = users.id WHERE orders.id = 456;

Automated tests can also be used, which perform queries on the database and compare the results with expected outcomes.