1. A computer-implemented method comprising migrating a personality of a computing environment from a source machine platform to a target machine platform, said source machine platform and said target machine platform both having Common Information Model objects extracted on a Common Information Model based system management infrastructure, the migrating step comprising steps of: a) providing in a database, migration rules of Common Information Model objects between a plurality of platforms; b) extracting from the database the migration rules of Common Information Model objects between said source machine platform and said target machine platform; c) extracting Common Information Model objects related to said personality of the computing environment from said source machine platform according to the extracted migration rules; d) extracting from the target machine, platform Common Information Model objects corresponding to the extracted Common Information Model objects of the source machine platform according to the extracted migration rules; e) generating migration tasks to be executed on the extracted Common Information Model objects of the target machine platform according to the extracted migration rules; and f) executing the generated migration tasks on the extracted Common Information Model objects of the target machine platform; g) issuing a migration request by a user, wherein the source machine platform and the target machine platform involved in the migration as well as the user data are specified in the migration request; and when an application on the target machine platform is invoked, h) generating a translucent UI (user interface) on the UI of the application, said translucent UI being identical to the double-face UI of the corresponding application on the source machine platform which has similar functions with those of the application on the target machine platform.