（　　）是一个小型的二进制文件，可以记录数据库的物理结构。

A、SELECT NAME + '''s address is ' + ADDR FROM EMP
B、SELECT NAME || '''s address is '|| ADDR FROM EMP
C、SELECT NAME + '\’s address is '+ ADDR FROM EMP
D、SELECT NAME || '\'s address is '|| ADDR FROM EMP