What are the rules for making DFD, Software Engineering

Assignment Help:

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 them.

Identify the manner in which they interact with one another.

2.   Do numbering of processes.

3.   Avoid complex DFDs (if possible). 

4.   The DFD must be internally consistent. 

5.   Each process must have minimum of one input and one output. 

Data store must contain all the data elements which flow as output and input. 

 


Related Discussions:- What are the rules for making DFD

Determine the meaning of vertical partitioning, Determine the meaning of ve...

Determine the meaning of vertical partitioning? Vertical partitioning often called factoring suggests that the control and work should be distributed top-down in program struct

Distinguish among verification and validation, Distinguish between verifica...

Distinguish between verification and validation. Verification is the set of activities that ensure that software properly implements a specific function. Validation is a differ

Describe various types of cohesion, Describe various types of Cohesion? ...

Describe various types of Cohesion? i. Coincidentally cohesive -The modules in which the set I\of tasks are linked with each other loosely then these modules are called coincid

Advanced software engineering, Is there ever a case when the generic activi...

Is there ever a case when the generic activities of the software engineering process don’t apply?

Explain about the e-r diagram, Explain about the E-R Diagram Entity-rel...

Explain about the E-R Diagram Entity-relationship (E-R) diagram is detailed logical representation of data for an organisation. It is data oriented model of a system while DFD

Why winrunner may fail to identify an object on a gui, Why WinRunner may fa...

Why WinRunner may fail to identify an object on a GUI? WinRunner may fail to recognize an object in a GUI in below cases: - If it isn't a standard windows object - If the

Define behavioural modelling, Define Behavioural Modelling. The state t...

Define Behavioural Modelling. The state transition diagram shows the characteristics of a system by depicting its states and the events that cause the system to change state

Explain fan in and fan-out, Fan in/Fan-out :- Fan-in is a measure of th...

Fan in/Fan-out :- Fan-in is a measure of the number of process or functions that call some other function or process (say X). Fan-out is the number of functions that are known

What is coupling, What is Coupling? Coupling is the measure of interconn...

What is Coupling? Coupling is the measure of interconnection among modules in a program structure. It depends on the interface complexity among modules.

Explain agent-oriented programming languages, Question: (a) Name two a...

Question: (a) Name two agent-oriented programming languages. (b) Distinguish between communication protocols and interaction protocols for agent systems. Give two example

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