A Hub-and-spoke Approach
Hub-and-spoke approach is taken in a data hub for data integration. The
data is physically moved and re-indexed into a new system. Unlike data
lake, the data hub needs to support discovery, indexing and analytics.
Data harmonization is one of the essential elements of a data hub where
the data coming from various sources and various formats are harmonized
by reducing various asymmetries such as naming differences, structural
differences, semantic differences, etc.