4. Conclusion and outlook

The software currently available on the market is presented in and in [7] .

As far as industrial applications are concerned, which are very diverse [8] , it's fair to say that, for the time being, they mainly use constraints on finite domains. The main advantage over traditional methods, such as those used in operations research, is the ease with which they can be adapted to different customer requirements, and their flexibility in the face of change. A summary classification of the fields of application can be found at [9] ....