7Eriksson, O. ( 2005 ). The pragmatic language functionality of information systems [ DB/OL]. [ 2014-12-28 ]. http ://www. vits. org/ publikationer/dokument/252, pdf.
8Mellor S. J. , Clark A. N. , & Futagami,T. (2003). Guest edi-tots" introduction : Model- driven development [ J ]. IEEE Software, 20 ( 5) :14 ~ 18.