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EXAMPLE: A real-world object identified as the 'Rhine' may be realised through a Network view (as a set of links and nodes), a Physical Waters view (as a Watercourse), and a reporting view (as a WFDRiver).

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EXAMPLE: A real-world object identified as the 'Rhine' may be realised through a Network view (as a set of links and nodes), a Physical Waters view (as a Watercourse), and a reporting view (as a WFDRiver).