During February 2025, Bernardo Botella enhanced Apache Cassandra by developing a feature that improves column constraint error messages, providing developers with precise feedback that includes the specific column name and violated condition. This work, delivered in the apache/cassandra repository, focused on backend development and robust error handling using Java. Bernardo applied test-driven development practices, updating and expanding unit tests to ensure the accuracy and reliability of the new error messaging. By strengthening constraint validation within the storage engine, Bernardo’s contribution improved maintainability and reduced diagnostic time, demonstrating a deep understanding of database systems and a commitment to code quality.