Discuss in details about functional modeling, Software Engineering

Assignment Help:

Discuss in details about Functional Modeling.

  • This model describes the computations that take part within a system.
  • This model is helpful when the conversion from the inputs to outputs is complex.
  • 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 diagram that depicts the information flow and the change that are applied when the data shift from input to output.
  • Level 0 DFD also known as fundamental system model or context model which describes the total software act as a single bubble with input and output data indicated 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

  • Ward and Meller extensions
  • Hatley and Pirbhai extension.

 


Related Discussions:- Discuss in details about functional modeling

Iterative enhancement and evolutionary development model, Q. Differentiate ...

Q. Differentiate between iterative Enhancement Model and Evolutionary Development model. Ans. Iterative Enhancement Model: This model has the similar phases as the waterfall

What is the evolution of software engineering, What is the Evolution of sof...

What is the Evolution of software engineering Any application on computer runs by software. As computer technologies have changed tremendouslyinthe last five decades, consequen

Explain the concept of decision tables, Explain the concept of Decision Tab...

Explain the concept of Decision Tables Decision table models complex logic into precise yet compact way. A decision table lists causes and effects in a matrix. Every column

Construct an e-r diagram, Construct an E-R Diagram for the application desc...

Construct an E-R Diagram for the application described on the next page. Include any additional assumptions you made about the application requirements. The assumptions may not dir

Determine the higher order programming languages, Determine the Higher orde...

Determine the Higher order programming languages Higher order programming languages such as COBOL and PASCAL came into existence. Use of these made programming much easier. In

How to build the structure chart, Q. How to build the Structure Chart? ...

Q. How to build the Structure Chart? Building the Structure Chart Processes in the DFD are liable to represent one module on the structure chart Efferent processes

What is a user guide, The "user guide" is the similar as the user manual. T...

The "user guide" is the similar as the user manual. The user guide is a document that shows information essential to employ a system or component to get the desired results. Typica

What is sci, What is SCI? Software Configuration Item is in order that ...

What is SCI? Software Configuration Item is in order that is carried as part of the software engineering process.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd