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 a document version, What is a document version? Ans) A document ...

What is a document version? Ans) A document version is a first release (or complete re-release) of a document, as opposed to a revision resulting from issuing change pages to a

Explain scm, What is SCM? Software Configuration Management is a set of...

What is SCM? Software Configuration Management is a set of activities carried out for identifying, organizing and controlling alters throughout the lifecycle of computer softwa

What is a variant, What is a variant Ans) "Variants" are versions of a p...

What is a variant Ans) "Variants" are versions of a program.

Explain compatibility testing, Compatibility testing is testing how well so...

Compatibility testing is testing how well software performs in a certain operating system,hardware, software, or network environment.

Determine the problems of software maintenance, Determine the problems of s...

Determine the problems of software maintenance Software maintenance has the below problems: i)  It is very cumbersome to analyse and understand code written by somebody.

What specific languages can be used in srs, What specific languages can be ...

What specific languages can be used in SRS? Requirement specification necessitates the use of some order language. The language should support the desired qualities of the SRS-

No , Hard drive has space, but it keeps telling me that its full and asks m...

Hard drive has space, but it keeps telling me that its full and asks me to delete files. I checked. There is nearly full C drives (8GB) but when i am open c drive and check than ne

Show the advantages of re-engineering, Q. Show the Advantages of Re-Enginee...

Q. Show the Advantages of Re-Engineering? 1) Reduced risk - there is a elevated risk in new software development. There possibly staffing problems, development problems and spe

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