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（）<br>A:type array arr_type[emp.ename%type] index by binary_integer;<br>B:type table arr_type[emp.ename%type] index by binary_integer;<br>C:type arr_type is table of emp.ename%type index by binary_integer;<br>D:type arr_type is pl_sql table of emp.ename%type index by binary_integer;

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;

出自：Oracle认证

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