在PL/SQL中定义一个可以存放雇员表(EMP)的员工名称(ENAME)的PL/SQL表类型,应该()
A.
type array arr_type[emp.ename%type] index by binary_integer;
B.
type table arr_type[emp.ename%type] index by binary_integer;
C.
type arr_type is table of emp.ename%type index by binary_integer;
D.
type arr_type is pl_sql table of emp.ename%type index by binary_integer;