This entity relationship diagram models a digital pet adoption system by connecting users, pets, shelters, applications, reviews, and payments. User entities manage adopter profiles, while pet entities track breed, age, vaccination, and health history. Shelters list available animals, manage adoption requests, and maintain care records.
Applications record approval status, while payment entities process adoption fees and donations. The review system encourages transparency and builds trust between users and shelters. Designed for developers and NGOs, this ER diagram streamlines adoption workflows, ensures compliance with legal and health standards, and enhances pet welfare through efficient tracking.
