Erland Sommarskog (6/30/2014)
They are not logins. They are schemas, and for legacy reasons they are also database users. dbo is dbo, the overall almighty in the database and you can't do anything about that. guest is by default disabled, and you should let it remain so. You can forget about sys and INFORMATION_SCHEMA as database users.
Thank you Erland. I will ignore those then. Now I need to learn how to synchronize data between Excel and SQL, but that is another thread. 🙂
Thanks again,
djj