what is dbo in sql server

In SQL Server, "dbo" stands for "database owner". It is the default schema created in every database. The "dbo" user is a built-in database user in every single database that represents the Database Owner. This user has full unrestricted access to the database and cannot be limited or dropped. The "dbo" schema is the default schema for all users, unless some other schema is specified. The "dbo" prefix is added to table names by default when tables are created, but it is not necessary to include it in queries.