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 the use of user interface prototyping, What is the use of User Inte...

What is the use of User Interface prototyping? This prototyping is used to pre-specify the look and feel of user interface in an effective way.

What is a software project test plan, What is a software project test plan?...

What is a software project test plan? A test plan is the master document that having all details pertaining to testing of the application. Its contents include: - Testing sc

What is quality, What is quality? Quality, simplistically, means that a...

What is quality? Quality, simplistically, means that a product should meet its requirement. This is problematical for software systems. There is a tension among custom

Defining a prototype on the overall cost, Describe the effect of defining a...

Describe the effect of defining a prototype on the overall cost of the software project? The prototyping model: In this model, a prototype (an previous approximation of a fin

What is risk assessment, What is Risk Assessment? Ans) A associated impa...

What is Risk Assessment? Ans) A associated impact and its comprehensive evaluation of the risk

Define the failure intensity of the basic model, Q Define the failure inten...

Q Define the failure intensity of the Basic model? Ans: The failure intensity of the Basic model is λ (μ) = λ 0 [1 - μ / v 0 ] Where λ 0 is the initial failure inten

Describe requirement engineering, Define Requirement Engineering . Requi...

Define Requirement Engineering . Requirement Engineering is a process in which all of the activities required to maintain and create a system requirements document. The four

Explain the corba component model types, Question 1: a. What are the F...

Question 1: a. What are the Facets of Component that you know about ? b. Explain the CORBA component Model types ? c. Talk about the three concepts that you should keep

Compare the productivity and difficulty, Q. Compare the Productivity and di...

Q. Compare the Productivity and difficulty? Productivity refers to metrics as well as measures of output from production processes per unit of input. Productivity P perhaps c

List the pre-requisites for white-box testing, List the pre-requisites for ...

List the pre-requisites for white-box testing The pre-requisites for white-box testing are same to that of black-box testing with one main difference: - During white-box tes

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages