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

What is sdlc , Explain  SDLC ? Ans) SDLC-( software development life cyc...

Explain  SDLC ? Ans) SDLC-( software development life cycle) is an acronym.

Define black box testing strategy, Define black box testing strategy. B...

Define black box testing strategy. Black box testing describes the functional requirements of the software. Test cases are determined on the basis of the requirements or specif

What is fault tree analysis, What is Fault Tree Analysis? Ans) A form of...

What is Fault Tree Analysis? Ans) A form of safety examines that assesses hardware safety to give failure statistics and sensitivity analyses that point to the possible effect o

Advantage of prototype software development model, Q What is the advantage...

Q What is the advantage of utilizing prototype software development model instead of waterfall model? As well explain the effect of defining a prototype on the overall cost of the

Fan out Fan In, Explain fan out and fan in with example.

Explain fan out and fan in with example.

What do you understand by the term integrity, Question: (a) What do yo...

Question: (a) What do you understand by the term "integrity"? (b) Which type of attack denies authorized users access to network resources? (c) You have discovered tha

Determine the principle stages of vord method, What are the principle stage...

What are the principle stages of VORD method? Viewpoint identification: Identify the services provided to each point of view Viewpoint structuring: Sorting related viewpoint

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

Illustrate partitioning in stepwise refinement, Q. Illustrate Partitioning ...

Q. Illustrate Partitioning in stepwise refinement? Problems are frequently too large and complex to be understood as a whole. Therefore we tend to partition such problems into

Stats free, system architecture block diagram

system architecture block diagram

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