This tutorial discusses relationships between linked data entities and how the concepts of JSON-LD and NGSI-LD can be used to interrogate entities and navigate from one entity to another. The tutorial discusses a series of simple linked-data data models based around the supermarket chain’s store finder application, and demonstrates how to design models holding one-to-one, one-to-many and many-to-many relationships. This NGSI-LD tutorial is a direct analogue to the earlier Understanding Entities and Relationships tutorial (which was based on the NGSI v2 interface). The differences in relationships created using NGSI v2 and NGSI-LD are highlighted and discussed in detail.
The tutorial uses cUrl commands throughout, but is also available as Postman documentation.
NGSI-LD offers JSON-LD based interoperability used for Federations and Data Spaces. To run this NGSI-LD tutorial for NGSI-v2 developers, use the NGSI-v2 branch.
git clone https://github.com/FIWARE/tutorials.Relationships-Linked-Data.git
cd tutorials.Relationships-Linked-Data
git checkout NGSI-v2
./services create
./services start |
📚 Documentation |  Postman Collection |
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