The Italian MAIS FIRB project, started in 2002, studies multichannel adaptive information systems. The design and the devel-opment of multi-channel information systems require new approaches, mainly based on the definition of adaptive behaviour with the goal to in-crease the efficiency and effectiveness of solutions. In this paper, we show a simplified example of financial information system and
... [Show full abstract] we discuss con-straints on services posed by different channels. The paper proposes a multilevel definition of channels and new logical primitives, which are used to define rating classes that will be the starting point of our adap-tive strategies.