dbo rolemembership and files size of database files

Hi
If I create a database and give to the database user
dbo role membership he is able to change size of datafiles
mdf and ldf. How can i suppress that so that this is no longer
possible?
Kind regards
MickeyDBO should not have this right by default. Make sure the user is also not
a member of
sysadmin or diskadmin fixed server roles.
Thanks,
Kevin McDonnell
Microsoft Corporation
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