During June 2025, work focused on enhancing the ahumadamob/springboot-calificaciones repository by implementing robust entity relationships and data transfer objects for the Cursada entity. Using Java, JPA, and Spring Boot, the developer introduced a new request DTO and updated the Cursada entity to establish proper JPA relationships, which improved data structure and management. Adjustments were made to both the controller and service layers to support these changes, resulting in better data validation and handling throughout the application. No major bugs were addressed during this period, with efforts concentrated on delivering this feature and refining the underlying REST API architecture.