olemus
(a) andmeliidendus:
eri allikatest pärit andmete
metaandmete agregeerimine
selleks määratud tehnoloogia abil
= a type of data virtualization that aggregates data from various sources and provides a single source of data

(b) andmeliidend: tulemuseks saadav agregaat
= the resulting aggregate

ülevaateid
https://browseinfosolutions.com/browseinfosol/clearly-defining-data-virtualization-data-federation-and-data-integration/

https://www.techopedia.com/definition/13789/data-federation-technology

https://www.domo.com/learn/article/a-guide-to-data-federation-everything-you-need-to-know

https://simplicable.com/new/data-federation-definition

http://www.quant-ict.nl/wp-content/uploads/2013/12/Data-Virtualization-and-Federation-White-Paper-2-11.pdf

https://en.wikipedia.org/wiki/Federated_database_system

https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.40.9658&rep=rep1&type=pdf