Barangay DB Entity Relationship Diagram models a municipal resident management system with five core entities: staff, residents, family_relationships, activity_log, and system_settings. Staff members log activities tied to residents through foreign key relationships, while residents link to each other via family_relationships for household tracking. The schema captures comprehensive resident demographics—name, birth_date, age, gender, civil_status, address, zone, contact, occupation, educational_attainment, voter_status, PWD/senior status, and household hierarchy. This normalized design supports barangay operations from census management to activity auditing. Fork and customize this diagram on Diagrams.so to adapt it for your local government unit's specific data requirements.