Contributed to the SYSOUT-org/CS-Study repository by developing two in-depth documentation features focused on database transactions and normalization. Leveraging expertise in database theory, the work detailed ACID properties, isolation levels, and transaction management in both MySQL and Spring, providing clear explanations of transaction schedules and anomalies. The normalization documentation outlined normal forms, benefits, and denormalization as a performance consideration. All materials were authored in Markdown, aligning with repository standards to improve maintainability and onboarding for new developers. This approach consolidated essential database concepts, reduced support time, and ensured that complex topics were accessible and well-organized for the engineering team.