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

When do you choose automated testing over manual testing, When do you choos...

When do you choose automated testing over manual testing? Automation is chosen when -A similar set of tests need to be repeated again and again -When a single test requi

Define the meaning of code inspection, Define the meaning of Code Inspectio...

Define the meaning of Code Inspection - A formal testing technique where programmer reviews source code with a group who ask questions analyzing program logic, analyzing code

Explain silktest and its methodology behind silk test, Describe SilkTest? W...

Describe SilkTest? What is the methodology behind Silk test? SilkTest is a software testing automation tool which is developed by Segue Software, Inc. Methodology behind thi

What is oo system testing, OO system testing is actually identical to its c...

OO system testing is actually identical to its counterpart in the procedural environment.

What is data restructuring explain, Q. What is Data Restructuring explain? ...

Q. What is Data Restructuring explain? Data Restructuring : Prior to data restructuring begins a reverse engineering activity called analysis of source code must be conducted.

Explain basic execution time model, Q. Explain Basic Execution Time Model? ...

Q. Explain Basic Execution Time Model? The model was developed by the J.D. MUSA in 1979(MUSA79) and is based on execution time. It is presumed that failures may occur according

Software Metircs, I have a comprehensive question for Software Metrics ...i...

I have a comprehensive question for Software Metrics ...it is 16 question

What are the common approaches in debugging, What are the common approaches...

What are the common approaches in debugging? Brute force method: The memory dumps and run-time tracks are examined and program with write statements is loaded to obtain clues t

Explain common coupling with example, Q. Explain Common coupling with examp...

Q. Explain Common coupling with example? Common coupling: General coupling is when two modules share the same global data (example a global variable). Changing of the shared

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