[Condition] Cannot change the owner of system databases master, model, tempdb, the resource database, or a database that is used as a distribution database. The principal must be a login. If the principal is a Windows login without a corresponding SQL Server login, the principal must have CONTROL SERVER permission and TAKE OWNERSHIP permission on the database. If the principal is a SQL Server login, the principal cannot be mapped to a certificate or asymmetric key. Dependent aliases will be mapped to the new database owner. The DBO SID will be updated in both the current database and in sys.databases. [Class] 
DATABASE
D A T A B A S E
O B J E C T
S C H E M A
T Y P E
C O N T R A C T , M E S S A G E T Y P E , o r S E R V I C E
S Y M M E T R I C K E Y
C E R T I F I C A T E o r A S Y M M E T R I C K E Y
E N D P O I N T