Glocare Pharmacy Management ER diagram models a complete pharmacy operations database with six core entities: Supplier, Drug, Inventory, Customer/Patient, Appointment, and Sales. Data flows from Suppliers through Drug records into Inventory tracking, while Patients connect to Appointments and Sales transactions linked to specific drugs and inventory levels. This schema demonstrates best practices for healthcare data integrity, including foreign key relationships that enforce referential consistency across supplier sourcing, stock management, and patient transactions. Fork and customize this diagram on Diagrams.so to adapt it for your pharmacy's specific workflows, compliance requirements, or multi-location operations. The design supports real-time inventory alerts via reorder_level thresholds and audit trails through last_updated and sale_date timestamps.