  Recently, attention has focused on the software development, specially by
differ-ent teams that are geographically distant to support collaborative work.
Manage-ment, description and modeling in such collaborative approach are
through sever-al tools and techniques based on UML models. It is now supported
by a large number of tools. Most of these systems have the ability to compare
different UML models, assist developers, designers and also provide operations
for the merging and integration, to produce a coherent model. The contribution
in this ar-ticle is both to integrate a set of UML class diagrams using
mappings that are re-sult of alignment and assist designers and developers in
the integration. In addi-tion, we will present a detail integration of UML
models with the validation of mappings between them. Such validation helps to
achieve correct, consistent and coherent integrated model.
