Explore the intricacies of MariaDB and its applications in data breach search engines and big data scenarios in this comprehensive conference talk from DSC EUROPE 24. Lukas Vileikis delivers a detailed walkthrough of MariaDB's inner workings, explaining how, why, and when MySQL and MariaDB function as they do. Gain a deeper understanding of MariaDB's potential and learn practical implementation strategies for handling large-scale data challenges. This 83-minute technical presentation equips participants with knowledge about building effective data breach search engines using MariaDB's capabilities. The talk was presented on November 19th at the Data Science Conference in Belgrade, offering valuable insights for database professionals and security specialists working with large datasets.