Mastering SQL transactions involves controlling the flow and integrity of database operations using COMMIT, ROLLBACK, and SAVEPOINT. COMMIT makes changes permanent, while ROLLBACK reverts changes and discards the transaction. SAVEPOINT creates checkpoints to roll back to specific points within a transaction, providing more flexibility in complex operations.

Implement a domain-specific language in Kotlin to efficiently solve specific problems by designing a simple and readable structure, utilizing the builder pattern and closures to create a more expressive way to configure and define the problem domain. Learn how to apply this concept to real-world use cases, such as building a web server configuration DSL, and explore how it can provide a more intuitive solution to complex problems.

Deploy a Flask application to the cloud and automate the build, test, and deployment process with GitHub Actions and a cloud platform like Heroku.