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v8, 24/12/2015 (SE, review/integration of comments/corrections)
v9, 5-7/01/2016 (SE/BC/CM, comments/corrections)
Main evolution relative to v1
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2) Grouping of products is rationalized in version 2
A granule is still a record/line in the epn_core view database, and corresponds to the smallest data unit described by the service.
A "product" is typically a data file, or a service output, that can be reached through a URL
In Version version 2 both concepts coincide, while in v1 several products could be part of the same granule.
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