Explain in detail about functional modeling, Software Engineering

Assignment Help:

Explain in detail about Functional Modeling.

This model explains the computations that take place within a system.
This model is useful when the transformation from the inputs to outputs is difficult.
The functional model of a system can be shown by a data Flow Diagram (DFD).

Data Flow Diagrams/Data Flow Graph/Bubble chart

A DFD is a graphical representation that depicts the information flow and the transforms that are applied as the data move from input to output.
Level 0 DFD also known as fundamental system model or context model shows the entire software as a single bubble with input and output data shown by incoming and outgoing arrows.
Level 1 DFD contains 5 or 6 bubbles. Every bubble can be refined at Layers to depict more details.

Extensions to Real Time Systems

Hatley and Pirbhai extension.
Ward and Meller extensions

Related Discussions:- Explain in detail about functional modeling

December 2010, differentiate between structured analysis and structured des...

differentiate between structured analysis and structured design

Define the concept of SRS, Define the concept of SRS An SRS clearly def...

Define the concept of SRS An SRS clearly defines following: • External Interfaces of the system: They identify information which is to flow 'from and to' to the system.

State about the build and fix model, Build and Fix Model It's a simple...

Build and Fix Model It's a simple two phase model. In one phase, code is developed and in another, code is fixed. Figuredepicts the Build and Fix model.

Threads, what resources are used when a thread is created ?

what resources are used when a thread is created ?

List some of the design principles, Mention some of the Design principles. ...

Mention some of the Design principles. a. The design process should not suffer from tunnel vision. b. The design should not reinvent the wheel. c. The Design sh

Handling customer complaints, Handling customer complaints There are al...

Handling customer complaints There are always some customers who complain after completing the sales. Like customer objections, don't take complaints negatively. Other than

Why testing is important with respect to software, Why testing is important...

Why testing is important with respect to software? A testing process focuses on logical internals of software ensuring that all statements have been tested and all are function

Decision table, how to draw decosion table? questions based on decision tab...

how to draw decosion table? questions based on decision table.

State about the software requirements specification, State about the Softwa...

State about the Software Requirements Specification This document is produced as output of requirement analysis. Requirement analysis involves obtaining a clear and thorough

Illustrate about clear box testing and ad-hoc testing, Clear box testing an...

Clear box testing and Ad-hoc Testing Clear box testing is white box testing which is a structural testing method. It needs understanding of the internal logic and flows of the

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages