For distributed database the IV phase of access to data is typical. For this reason we don't consider further the Movable Application variant of Distributed Function model. Distributed Presentation model does not represent exactly the calling of application from client. From the point of view of our further analysis, ie. Therefore we don't include Distributed Presentation in our analysis, taking into account that its network requirements will be lower than by Remote Presentation.
Presentation logic make user to call application, which is resided at server node.
Transaction server - in this model presentation is resided at client node and data logic is resided at server node. In this case client business logic calls blocks of functions, which are resided at server node. These blocks of functions realize the majority of application functions and access to data. Optimised data server - in this model presentation is resided at client node and data logic is resided at server node. In this case client business logic, which realizes majority of application function, calls stored procedures, which are resided at server node.