Worked on the NclRSE-Training/countries repository to initialize and update country metadata, focusing on improving data integrity for training materials and analytics. Developed a new data file for RidhabPlace, capturing population and capital information, and subsequently corrected demographic details to ensure accuracy. Emphasized data management best practices by maintaining version-controlled, traceable changes across commits, supporting reliable demonstrations and downstream analysis. Utilized text-based data formats and version control systems to manage updates efficiently. The work addressed the need for consistent, accurate country data within the repository, laying a foundation for future enhancements and supporting robust training workflows in data management.