Recognizing gap between UML design model and its implementation

The growing use of object oriented technique and programming language, led them to be used in developing software systems in both academic and industrial areas. Unified modeling language (UML) is a standard notation that has been used in modeling the object oriented software systems besides using the programming language such as JAVA C# and C++ in order to develop software's. In the software developing process, implementation begins after the design phase; likewise both of them can be performed in parallel. Changes during development process have side effects on designing and implementing part of the software. One of the basic side effects is a gap that happens between these two parts. The purpose of this paper is to explain this problem in details and mentioning the usage of the Chidamber and Kemerer metrics, in recognizing the gap between two design and implementation parts.