I'm using this script to create a differential backups for my database :
BACKUP LOG myDatabase TO DISK = 'myDatabaseBackup.dif'
But what amazes me is that the generated file does not change in size, even if I insert more information or create new tables in my database. I expect the size to change because the full backup size changes if I add more data into my database.
Full backup script :
BACKUP LOG myDatabase TO DISK = 'myDatabaseBackup.bak'
I run the above scripts manually (every hour) because I'm using SQL Server Express, and apparently it does not have the Maintenance Plan feature.