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 equivalence class, Equivalence class: -It shows a set of valid or in...

Equivalence class: -It shows a set of valid or invalid states for input conditions. An input condition is either a particular numeric value, a range of values, a set of related val

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

Iso 9001 and cmm, ISO 9001 and CMM: 1:  Management responsibility 2:...

ISO 9001 and CMM: 1:  Management responsibility 2: Document control 3: Purchasing 4: Training 5:  Internal quality audit

Explain in detail about data modeling, Explain in detail about data modelin...

Explain in detail about data modeling Data modeling creates use of the ERD. Having of 3 interrelated information. The data object. Relationships. Attributes

Define a software process, Define a software process. How do software myths...

Define a software process. How do software myths affect a software process? Software process is a Coherent set of activities for specifying, designing, executing and testing so

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

Write about software change methods, Write about software change methods. ...

Write about software change methods. The software change strategies that could be applied individually or together are: Software maintenance - The changes are made in the softw

ER Diagram, ER Diagram for Safe Home System

ER Diagram for Safe Home Systems

What does level0 dfd means, What does Level0 DFD means? Level0 DFD is c...

What does Level0 DFD means? Level0 DFD is called as 'fundamental system model' or 'context model'. In the context model the total software system is represented by a single bub

Draw an entity relationship diagram, Problem: (a) Draw an Entity Relat...

Problem: (a) Draw an Entity Relationship Diagram for the given case study. Show entities and relationships on the diagram (attributes should not be shown). Cardinality and op

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