olemus
mis tahes üldine tunnus või omadus, mida saab seostada konkreetse andmekoguga
= any general characteristic or property that can be associated with a specific collection of data

ülevaateid
https://www.quora.com/What-are-data-attributes

https://subscription.packtpub.com/book/data/9781838826031/2/ch02lvl1sec06/data-classifications-and-data-attributes-explained

https://teachmint.storage.googleapis.com/public/978327707/StudyMaterial/93cf46dc-2d83-48ad-b621-00a2acc3d899.pdf