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Differential backup ,showing file processed without change in database

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Hi Experts,

  After taking full backup of mydatabase its showing following message :

Processed 20640 pages for database 'adventureworks', file 'AdventureWorks_Data' on file 7.

Processed 1 pages for database 'adventureworks', file 'AdventureWorks_Log' on file 7.

BACKUP DATABASE successfully processed 20641 pages in 4.891 seconds (34.571 MB/sec).

Now agin I am taking differential backup of same database without done any chnage in my database , Then I am getting following message

Processed 40 pages for database 'adventureworks', file 'AdventureWorks_Data' on file 5.

Processed 1 pages for database 'adventureworks', file 'AdventureWorks_Log' on file 5.

BACKUP DATABASE WITH DIFFERENTIAL successfully processed 41 pages in 0.292 seconds (1.148 MB/sec).

Here I am bit confuse to understand that why this is showing "Processed 40 pages for database" even I have not done any modification in the databse after taken full backup.


Regards Vikas Pathak



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