Grain Storage Room Monitoring ERD models a relational database for tracking environmental conditions across multiple storage facilities. Users manage GrainStorageRoom entities, which host Sensors that record EnvironmentalReadings (temperature, humidity, gas levels) and trigger Alerts when thresholds are exceeded. The schema normalizes user authentication, room metadata, sensor inventory, time-series readings, and alert history with foreign key relationships enforcing referential integrity. This architecture supports real-time monitoring dashboards and historical analysis for grain preservation and safety compliance. Fork this diagram on Diagrams.so to customize field names, add indexes, or extend with pest detection or moisture control tables.