Data Virtualization involves choosing which data sources to use for a virtualized view, whereas Data Federation involves physically storing the data in a centralized location

Data Virtualization is another name for a data warehouse, whereas Data Federation is a type of database management system

Data Virtualization involves replicating data from one source to another, whereas Data Federation involves combining data from different sources into a virtualized view without persisting it in a physical location

Data Virtualization involves creating a virtualized view of data without persisting it in a physical location, whereas Data Federation involves physically storing the data in a centralized location and making it available to users through a virtualized view

Data Virtualization and Data Federation are the same thing