Glocare Pharmacy Management Level 0 DFD models a four-process pharmacy system handling drug inventory, patient records, and sales transactions. Customer/Patient and Pharmacy Staff actors interact with Drug Management, Patient Management, and Sales Processing processes, while Drug Supplier feeds the Drug Management workflow. Data flows persist to three stores: Drug Inventory, Patient Records, and Sales Database, with Report Generation aggregating insights across all stores for staff dashboards. This architecture demonstrates separation of concerns across inventory control, patient safety, and transactional integrity—critical for HIPAA-compliant pharmacy operations. Fork this diagram on Diagrams.so to customize data stores for AWS RDS, DynamoDB, or S3, or extend it with additional processes like prescription fulfillment or insurance verification. The Level 0 abstraction makes it ideal for stakeholder communication before detailed AWS service mapping.