# ECS

- [Knowledge Base](/tutorials/link-center-1/project/ecs/knowledge-base.md)
- [ระบบผู้เชี่ยวชาญ  (Expert System)](/tutorials/link-center-1/project/ecs/expert-system.md)
- [Check product](/tutorials/link-center-1/project/ecs/check-product.md)
- [Compare two SQL databases](/tutorials/link-center-1/project/ecs/compare-two-sql-databases.md)
