In order to create a new data model is always interesting what others have done in order copy and to maintain interoperability.
That’s why we have available a database with all attributes and enumerations across all data models. 
Now it’s updated daily and the number of occurrences is also available.
We are testing a potential new format for the specification that
1) makes easier for people to read the specification
2) provides additional utility to be connected with other platforms making NGSI more compatible
Could you check these two new specifications Building, BuildingOperation compared with the old two Building, BuildingOperation and gives us your opinion?
(once in, click on the name of the object for deploying all the content)
[cf7form cf7key=”new-specification-format”]The actual new specs are here without viewer (building, building operation) what you see above is generated automatically from the yaml specs.
What’s the idea behind adopting yaml specifications? To allow multiple evolutions (automatic multilanguage spec, integration with other platforms, etc)
Some of the contributors have requested some help about creating new data models. How to do it and where to do it.
HOW TO CREATE DATA MODELS
1) If you are clear about the payloads that you want to share (you have a plain key values json payload)
2) You can use this tool https://www.liquid-technologies.com/online-json-to-schema-converter (This link is always available in the Learning Zone on the upper menu, section tools)
to generate a draft version of the json schema. You will have to review (for sure).
– Whether you need some restrictions (min, max) on number properties
– The number of required properties
– The full list of options in enumeration properties
– Remove the context (it is treated as property)
– Check the Arrays (minItems, etc)
and possibly some other minor issues
WHERE TO CREATE DATA MODELS
3) We offer an open repository named pending for you to contribute while developing. Ask for access raising an issue with the option ‘Access to pending repository’
http://data-models.fiware.org/index.php/submit-an-issue-2/
Every day will be checked the documentation available for each data model and the result is dumped in the file documentationStatus.json
It would help a user to identify all the documentation, examples, schemas and specification available and it allows an automated use for any other purpose.
Check it out.
There is a new widget on the front page titled “Open PR and issues” there you can browse all the Pull requests contributed by the community and the open issues across all the data models.
Updated every 5 minutes
This way you can be informed about evolution going on and to make sure that all contributions are considered.
Although there are not data models coded yet (hopefully there will be new ones coming), just to let you know new subjects are.
– Battery inside the Cross Sector domain
– Green Energy inside the Smart energy domain
– Autonomous mobile robot inside de Smart robotics domain
The UAV or drones are interesting tools for many sectors. There is some interest in that, please contact us if you are using some of these vehicles/tools and willing to create a data model for them.
IUDX joins the steering board of Smart Data Models initiative. This agreement will allow FIWARE and the IUDX to collaborate on data models suitable for use in smart city applications. This work will be done in conjunction with the ongoing joint activity between TM Forum — an alliance of 850+ global companies working together to break down technology and cultural barriers between digital service providers, technology suppliers, consultancies and systems integrators — and FIWARE.
Slack channel
Discord channel #smart-data-models
help on discord
Invitation to discord 
Validate a payload with a data model(external)
