Manufacturing system ER diagram modeling production orders, materials inventory, quality checks, and user role-based access control. The schema connects Users and Roles through a junction table, links ProductionOrders to Materials via OrderMaterials, and tracks QualityChecks against each order with inspector assignment. This relational structure supports multi-user manufacturing workflows with role-based permissions, real-time stock tracking, and audit trails for quality compliance. Fork and customize this diagram on Diagrams.so to adapt it for your MES (Manufacturing Execution System), ERP integration, or shop-floor management platform. The ReportFilters table enables dynamic user-defined reporting on production metrics and material consumption.