Separating Local and Global Aspects of Runtime Model Recon guration

There is a growing need for applications that are able to adapt themselves to the context of use. One promising approach for the adaptation of an application during its execution is the use of models at runtime. In this approach models of the application and its context of use are kept alive during the execution. The application can be adapted by recon guring the structure of these models. Model Recon guration has local aspects as it handles the structure of a model and has to deal with its speci c properties. It also possesses global aspects, as the joint recon guration of several models is required due to consistency considerations. This paper aims at solving possible con icts between the global and the local aspects of Model Recon guration by introducing a distinction between two Levels of abstraction that enables the designer to separate and interrelate global and local aspects of Model Recon guration.