Questions

1. What is unit testing?
2. What are pure functions and side effects?
3. What is special about testing database functions or stored procedures?
4. How can we automate unit testing in databases?
5. What is test-driven development?
6. How can we compare the database schemas of two databases?
7. What is the purpose of database-abstraction layers?
8. How can we compare data in different databases?
9. How can we test database performance?