How does MOLAP SSAS default processing detect changes in the relational source?

by user3469285   Last Updated September 26, 2017 14:06 PM

When you set SQL Server SSAS to MOLAP, and default processing, it detect changes in the relational source and only loads those changes into the SSAS MOLAP storage at processing time. But how does it detect those changes in the first place?

Preferably answers will refer to some Microsoft documentation.

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