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

Define encapsulation, Encapsulation An object expresses the data and i...

Encapsulation An object expresses the data and information it contains and supports a well described abstraction. Encapsulation leads to the separation of the interface and ex

How to compute the cyclomatic complexity, How to compute the cyclomatic com...

How to compute the cyclomatic complexity? The cyclomatic complexity can be computed by any one of the following ways. 1. The numbers of regions of the flow graph correspond

What are the main objectives of reverse engineering, What are the main obje...

What are the main objectives of reverse engineering? The main objectives of the reverse Engineering process are: (i) It helps the companies to understand the difficulties

What do you mean by the computer based system, What do you mean by  the co...

What do you mean by  the computer based system? The computer based system can be termed as "a set or an arrangement of elements that are managed to accomplish some predefined g

Frame diagrams, We discussed the importance of framing a problem in order t...

We discussed the importance of framing a problem in order to understand the problem better and be able to develop a solution more quickly and easily. In this homework, you are ask

What is the use of architectural design, What is the use of Architectural d...

What is the use of Architectural design? The Architectural design explains the relationship among major structural elements of the software, the "design patterns" that can be u

Product engineering- concept, Product engineering is a system engineering ...

Product engineering is a system engineering approach which starts with system analysis. The system engineer identifies  the customer's requirement, determines economic and econ

Explain in detail about data modelling, Explain in detail about data modell...

Explain in detail about data modelling. Data modeling makes use of the ERD. Having of 3 interrelated information. The data object. Attributes.  Relationsh

What is a vertical microinstruction, What is a vertical microinstruction? ...

What is a vertical microinstruction? Ans) A vertical microinstruction is a microinstruction that states one of a sequence of operations required to carry out a machine language

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