"@id": "dtmi:handsOn:Zone;1", "@type": "Interface", "displayName": "Zone", "contents": [ "@type": "Property", "name": "temperature", "schema": "double", "writable": true , "@type": "Relationship", "name": "contains", "target": "dtmi:handsOn:Shelf;1" , "@type": "Relationship", "name": "hasSensor", "target": "dtmi:handsOn:Sensor;1" ]

Now create the actual twins (instances):

Your graph is now alive. Think of it as a mini-Google Knowledge Graph for your warehouse. Unlike SQL (tables) or NoSQL (documents), ADT uses a graph query language similar to SQL but with RELATED and IS_OF_MODEL . Query 1: Find all sensors in the Receiving Zone az dt twin query --adt-name adt-warehouse-<unique> \ --query-command "SELECT sensor FROM digitaltwins zone JOIN sensor RELATED zone.hasSensor WHERE zone.\$dtId = 'ZoneReceiving'" Result: Returns TempSensor-Rcv . Query 2: Traverse two hops (Warehouse → Zone → Sensor) az dt twin query --adt-name adt-warehouse-<unique> \ --query-command "SELECT sensor, zone FROM digitaltwins wh JOIN zone RELATED wh.contains JOIN sensor RELATED zone.hasSensor WHERE wh.\$dtId = 'WarehouseMain'" This is powerful. In a real app, this query would run in milliseconds, even across 100,000+ nodes. Step 6: Simulate Telemetry and Compute Changes Here’s where it gets truly hands-on. Azure Digital Twins itself does not ingest telemetry directly. Instead, you use Azure Functions or IoT Hub to route data in.

Azure Digital Twins (ADT) gives that data context . It knows that Sensor 47 belongs to Room 312 , which is on the North Wing of Floor 3 , and that room contains a Server Rack . If the temperature rises, ADT understands the impact .


THE GOETHE-ZENTRUM TRIVANDRUM CONDUCTS THE GOETHE CERTIFICATE COURSES AND EXAMINATIONS IN KERALA UNDER THE AUSPICES OF THE GOETHE-INSTITUT/MAX MUELLER BHAVAN AND HAS ITS OWN TERMS AND CONDITIONS WITH REGARD TO THE CONDUCT OF THE GOETHE CERTIFICATE COURSES AND EXAMINATIONS IN KERALA. THE TERMS AND CONDITIONS ARE GIVEN OU WEBSITE: HTTPS://TRIVANDRUM.GERMAN.IN/

IMPORTANT INFORMATION REGARDING THE NEXT GOETHE CERTIFICATE A1-B2 EXAMINATIONS IN TRIVANDRUM AND KOCHI IN FEBRUARY 2026

PLEASE NOTE THAT THE GOETHE-ZENTRUM IS INTENDING TO CONDUCT THE GOETHE-CERTIFICATE B2 EXAMINATIONS IN TRIVANDRUM AND KOCHI ON 6TH & 7TH OF FEBRUARY 2026. WE WILL ALSO BE CONDUCTING GOETHE-CERTIFICATE A1-B2 EXAMINATIONS IN TRIVANDRUM AND KOCHI FROM 18TH FEBRUARY TO 21ST FEBRUARY 2026

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