Industrial attachment management ER diagram models a multi-entity relational schema for tracking student placements, supervisor assignments, and workplace activities across companies. The schema connects STUDENTS, SUPERVISORS, COORDINATORS, and COMPANIES through a central ATTACHMENT_PLACEMENTS table, with dependent entities for DAILY_ACTIVITIES, ATTENDANCE, and WEEKLY_REPORTS capturing placement progress and compliance. This design enforces referential integrity and supports audit trails essential for educational institutions managing internship programs at scale. Fork this diagram on Diagrams.so to customize entity relationships, add approval workflows, or adapt for your AWS RDS PostgreSQL or Aurora database schema. The crow-foot notation clearly distinguishes one-to-many cardinality, making it ideal for code-generation tools and ORM frameworks.