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 are the main objectives of reverse engineering, Q. Define Reverse Engi...

Q. Define Reverse Engineering? What are the main objectives of reverse engineering? Ans: The reverse engineering is the procedure of generating representations that are imple

Name the problem arising while development of software, What we called the ...

What we called the problem arising in development of software Problems arising in the development of software is called as crisis. It includes problems arising in the process o

What are the rules for making DFD, What are the Rules for making DFD ...

What are the Rules for making DFD The below factors must be considered when making DFDs: 1. Keep a note of all processes and external entities. Give unique names to th

What does a usecase diagram represent, Problem : (a) What does a UseCas...

Problem : (a) What does a UseCase Diagram represent? (b) Draw a UseCase Diagram for the above case study. (c) For any one use case give a detail use case specification.

Software development plan , Phone Company (WLPC) is a provider of wireless ...

Phone Company (WLPC) is a provider of wireless phone service in the US with 100,000 customers serving mostly small markets. WLPC has just purchased additional airwaves in the US, C

Railway reservation system, Problems and feasibility study

Problems and feasibility study

Explain in detail the design concepts, Explain in detail the design concept...

Explain in detail the design concepts Abstraction Data abstraction Functional abstraction •Control abstraction Information hiding •Every module in the s

Explain the types of software maintenance, What are the types of software m...

What are the types of software maintenance? Corrective maintenance - Means the maintenance for correcting the software faults. Adaptive maintenance - Means maintenance for a

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.

Case study - conference management system, This case study looks at the req...

This case study looks at the requirements for an information system to manage the organisation of an international academic conference. An academic conference consists of presenta

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages