Endpoint: POST /temperature Communication Format: JSON Protocol: HTTP

Input JSON Example (From Transformer): { "temperature": 25.0, "unit": "Celsius", "timestamp": "2026-04-12T18:30:00Z" }

Output JSON Example (confirmation): { "status": "stored", "db_id": 1, "message": "Data persisted successfully" }

Design Explanation: REST API serves as the "gatekeeper" for the database. Ensures the Transformer gets confirmation that the data is safe with POST pattern. I chose a RESTful POST pattern for the Transformer and Database layer to synchronize better.