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Q: 

What are the differences between a Differential Change Map and a Bulk Change Map?

What is the difference between a Differential Change Map and a Bulk Change Map?

+1  A: 

The following MSDN article defines these SQL Server page types:

SQL Server 2008 Books Online: Understanding Pages and Extents

Bulk Changed Map

Information about extents modified by bulk operations since the last BACKUP LOG statement per allocation unit.

Differential Changed Map

Information about extents that have changed since the last BACKUP DATABASE statement per allocation unit.

Tim  2009-04-13 02:58:53

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