在Oracle中,將當(dāng)前系統(tǒng)所有角色都授予scott,除Payroll外,下列哪個(gè)是正確的?()
A、ALTER DEFAULT ROLLE USER scott ALL EXCEPT Payroll
B、ALTER USER DEFAULT ROLLE ALL EXCEPT Payroll
C、ALTER DEFAULT ROLLE ALL EXCEPT USER scott
D、ALTER USER scott DEFAULT ROLLE ALL EXCEPT Payroll