Your "database team" is clearly paranoid. What kind of security risk do they expect if the tool aspnet_regsql.execreates a database? I understand that many Administrators feel uncomfortable using wizards because they want to know exactly what is going on behind the scenes. In this case, the command line tool provides a high degree of customization and should be preferable in wizard mode.
, , , . " SQL Server", , MembershipProviders PersonalizationProviders .