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

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

Design a digital system to produce a pwm , Task You have to design a d...

Task You have to design a digital system to produce a PWM signal that produces pulses at a frequency in the range 50 Hz -100 Hz . The pulses will be between 1 ms and 2 ms du

What are the various types of system testing, What are the various types of...

What are the various types of system testing? 1. Recovery testing - is intended to check the system's ability to recover from failures. 2. Security testing - verifies th

Micro program, micro program control

micro program control

What is big-bang strategy, Explain Big-Bang Strategy? Ans) Big-Bang appr...

Explain Big-Bang Strategy? Ans) Big-Bang approach is very easy in its philosophy where basically all the modules or builds are constructed and tested independently of each other

What is fault-based testing, 1. Testing that employs a test data selection ...

1. Testing that employs a test data selection method designed to obtain test data capable of demonstrating the absence of a set of pre-specified faults, typically, frequently happe

What is version description document, Explain version description document ...

Explain version description document (VDD)? Ans) Version description document (VDD) is a document that accompanies and signifies a given version of a software product. Typically

List the principles of a software design, List the principles of a software...

List the principles of a software design. i. The design process should not undergo from "tunnel vision". ii. The design should be traceable to the analysis model. iii. Th

Explain the reuse maintenance model, Q. Explain the reuse maintenance model...

Q. Explain the reuse maintenance model with the help of a diagram. Ans: Recycle maintenance model this model is based on the principal that maintenance could be viewed as an

What are the objectives of analysis modelling, What are the objectives of A...

What are the objectives of Analysis modelling? i. To explain what the customer requires. ii. To establish a basis for the creation of software design. iii. To devise a se

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages