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A.type array arr_type[emp.ename%type] index by binary_i……

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;