Asset and Fuel Management ER diagram models a relational database for tracking physical assets, fuel consumption, inventory, and maintenance schedules across multiple users. The schema defines five core entities—USER, ASSET, FUEL_USAGE, FUEL_INVENTORY, and MAINTENANCE—with foreign key relationships enabling one-to-many associations between users and assets, assets and fuel usage records, users and fuel inventory, and assets and maintenance logs. This normalized structure supports operational visibility into asset lifecycle, fuel efficiency monitoring, and preventive maintenance planning for fleet or facility management applications. Fork this diagram on Diagrams.so to customize table schemas, add indexes, or adapt it for your AWS RDS PostgreSQL or DynamoDB implementation. Consider adding audit timestamps and soft-delete flags to MAINTENANCE and FUEL_USAGE for compliance and historical tracking.