> That depends.  If the change was made using the same database  
> connection that was passed into sqlite3_backup_init(), then only those  
> pages that changed are recopied.  However, if an independent database  
> connection made the change, then the backup process has no way of  
> knowing exactly which pages changed, so it has to start over again  
> from the beginning.

That makes sense, thank you.  (I wasn't sure if the individual pages had 
a "Change Counter", similar to the one in the File Header, that could be 
used.)

~Eric
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