Question

Using a simple business problem as an example, identify and explain the characteristics of the software solution that would be favored with top-down design. How would these characteristics be different if the design methodology used the bottom-up approach instead? Explain which of these approaches would make the most sense for the chosen business problem. Explain which choice would make the most sense for the overall organization creating the solution.

Answer 1

Top-down and bottom-up are the effecient techniques for information processing as well as knowledge ordering in the bussiness perspective,and are helpful in a various arenas and also in the software.

In top down technique the process initiates by testing at the top of the hierarchy ,then add the sub modules that it calls and finally test the new combined system. This stratagy of testing should possess stubs to be written in hand.Even a single sub-module itself cannot be tested the intended reason behined it is they invoke various other sub-modules. in order to allow the sub-modules and to test it their subordinates have to be coded.

In the bottom-up technique the process initiates by the bottom of the hierarchy. At the initial stage the modules at the bottom level, are tested completly. Then finally those modules are combined with next-greater level modules for testing there by reaches to the up in theis stratagy.

In these two techniques both have their own advantages and diadvantages THIS has to taken into consideration based on the recquirements of the bussiness people. the bottom up stratagy can be applied if we are not aware of the things and go in a manner to get the things done. the topdown stratagy can be applied in a situation like where we are capable of organizing the things in a correct manner at the initial stage itself.