Hi Mark,
You can have a look at this. CREATE USER - SAP HANA SQL and System Views Reference - SAP Library
"For each database user a schema with the user's name is always created, this cannot be explicitly dropped. The user's schema will be automatically dropped when the user is deleted. The database user owns this schema and it is used as their default schema when they execute a command without explicitly specifying a schema name.
Users created without the option RESTRICTED are allowed to create any object in their own schema and they are granted the role PUBLIC allowing them to select any system view. Users created with the option RESTRICTED have no privilege, not even the allowance to create objects in their own schema. Theses users are meant for using specific applications only. All privileges needed for the application have to be granted to such users, preferrable using a role combined with the application."
Best regards,
Wenjun
