About Schema Owner Privileges
By default, the schema owner has privileges to create objects within a schema. Additionally, the schema owner can drop any object in the schema, requiring no additional privilege on the object.
The schema owner is typically the user who creates the schema.
Schema owners cannot access objects in the schema. Access to objects requires the appropriate privilege at the object level.
All other access to the schema and its objects must be explicitly granted to users or roles by a superuser or schema owner to prevent unauthorized users from accessing the schema and its objects.