Just came across this white paper on Windows Azure Network Security. Looking forward to reading it; appears to have useful information.
While researching on the users in our production database, I had to write a script to manipulate the SQL Server jobs and their owners.
While writing that script I came to know that sql_logins lists only SQL logins (such as sa or any other SQL login) whereas server_principals is more comprehensive hence returns a row for every login (whether be SQL or Windows)
According to the MSDN documentation, server_principals may return following types of logins:
- SQL login
- Windows login
- Windows group
- Server role
- Login mapped to a certificate
- Login mapped to an asymmetric key