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International-Data-Spaces-Association / InformationModel

The Information Model of the International Data Spaces implements the IDS reference architecture as an extensible, machine readable and technology independent data model.
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ids:UsagePolicyClass NOT subClass of odrl:Policy ? #551

Closed jlangkau closed 2 years ago

jlangkau commented 2 years ago

https://github.com/International-Data-Spaces-Association/InformationModel/blob/develop/model/contract/UsagePolicyClass.ttl

changqin26 commented 2 years ago

Thanks for the hint. ids:UsagePolicyClass should be the subclass of odrl:Policy. We will add it.

changqin26 commented 2 years ago

Hi @jlangkau, sorry I overlooked something in the Infomodel. In the IDS infomodl, ids:Contract is the subClassOf odrl:Policy. Please see here: https://github.com/International-Data-Spaces-Association/InformationModel/blob/e9bc60fb2c260728cbcd767be744b44c5b665112/model/contract/Contract.ttl#L14

Hi @hosseinzadeha, can you please help me with this point: Is there a relation between ids:Contract and ids:UsagePolicyClass? If yes, what should it be? Thanks in advance!

hosseinzadeha commented 2 years ago

@changqin26 Hi, I bring the three definitions here: An IDS Contract is implicitly divided to two main sections: the contract specific metadata and the IDS Usage Control Policy of the contract. So an IDS policy is a part of a Contract which contains usage restrictions. A Usage Policy Class is an atomic policy template that refers to a specific restriction on the data usage. For example, "restricting the usage to a time interval", or "restricting the usage to a specific location". Eventually, a Usage Control policy is a combination of one or more instances of the policy classes that is identified and is referring to a specific piece of data. For example: "The Data Consumer X shall use my data not later than 31st of March 2022 and only when the location is Germany." In my opinion, right now, an IDS Usage Policy Class could not be a subClass of odrl:policy because we have extended the ODRL policy language and we have some elements that are not defined in ODRL.

changqin26 commented 2 years ago

Many thanks @hosseinzadeha for your explanation! @jlangkau, I hope @hosseinzadeha's comment also helps you and I will close the issue.