Entity-relationship model for a youth soccer academy (Escolinha Futebol) with PostgreSQL, featuring user authentication, role-based access control, and comprehensive training management. The schema connects users through authentication to specialized roles (Administrator, Professor, Aluno), manages class enrollment via TURMA and TURMA_ALUNO junction tables, and tracks attendance, evaluations, and training exercises. Data flows from user profiles through class assignments to performance metrics including frequency, assessments, and video-based progress tracking. This architecture demonstrates normalized database design for multi-tenant educational platforms, ensuring data integrity and scalability for academy operations. Fork and customize this diagram on Diagrams.so to adapt it for your own sports management or educational institution platform.