University:
Anglia Ruskin University
Course:
BSE1300 | Software Engineering
Academic year:

2021
Views:

424

Pages:

2
Author:

Sharookh N.

Function Oriented Design Software Engineering ___ Notes In the function-oriented design, the system is broken down into many other subsystems that are each referred to as function. And while we also discuss design, it is also far easier to say that the project will have many functions that should get the job done in the middle rather than think of it in a systems sense. In extreme cases, the system may be conceptualized as a high-level view of all the functions involved. In fact, they can be traced to the traditional structured analysis design in which the divide and conquer strategy was employed. This form of design entails partitioning of the overall system into smaller units called functions. In doing so, they promote modularity by separating data and its use, these functional blocks are able to pass information between them by message passing as well as by accessing global variables. Also, an essential aspect of functions is that when a function is called by a program, the function executes and alters the program's state, a behavior that may not be desired by other components of the program. It helps area very well where State of the system does not have much significance; and programs or functions do processing on the input rather than on a state. Design Process ● Data Flow Diagram makes explanation of the entire system as a series of how data takes various forms. ● This shows function within a system and how those particular functions convert the input information. ● Once everything that has been identified is considered a whole system, it can be broken down if required into smaller systems, which will be viewed as functions of the whole system. ● Next, each function is extended into elaborated description.