Relavance stores its data atomically and de-duplicates it. Both the concept and each value of each concept are only stored once (unique) in the associative database.

The associations between the concepts can be stored many times. Because there is an automated historic data collection and also because of data de-duplication.

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Example:

   Jim Smith

   Jim Brown
 

Firstname "Jim" can be associated with Lastname "Smith" and "Brown".
The Firstname "Jim" is only stored once. The associations between Firstname and Lastname are stored multiple times

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It saves up to 70% of storage.