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

How lru technique is implemented, How LRU technique is implemented The ...

How LRU technique is implemented The LRU policy is more difficult to execute but has been more attractive on the assumption that the least recently used page is a better candid

Discuss in detail about structural modeling, Discuss in detail about Struct...

Discuss in detail about Structural Modeling. Structural model includes a detail refinement of ERD, data flow model and control flow model. Creating an ERD. For example

What specific languages can be used in srs, What specific languages can be ...

What specific languages can be used in SRS? Requirement specification necessitates the use of some order language. The language should support the desired qualities of the SRS-

What is boundary value, Explain Boundary value? (1)A data value that cor...

Explain Boundary value? (1)A data value that corresponds to a input, internal, or output value specified for a system or component. (2) A value which lies at, or just inside

What is function point, What is function point? Function point is the s...

What is function point? Function point is the size of measure it is also used to calculate approximately the software cost. Function point (FP)=Function Count (FC) * Value a

Computer science, Write a report that explains the agile principles for rap...

Write a report that explains the agile principles for rapid software development, and recommend and justify an appropriate method for adoption.

Software testing, Discuss the limitations of software testing. How do we sa...

Discuss the limitations of software testing. How do we say that complete testing is impossible?.

Explain diffrent types of system testing, Q. Explain diffrent types of syst...

Q. Explain diffrent types of system testing? System testing System tests are designed to validate a fully developed system to assure that it meets its requirements. There are f

Information storage and retrieval software, INFORMATION STORAGE  AND RETRI...

INFORMATION STORAGE  AND RETRIEVAL SOFTWARE: IBM (International Business Machines Corporation) was one of the earliest to invest money to develop software packages intended fo

What are the objectives of analysis modeling, What are the objectives of An...

What are the objectives of Analysis modeling? i. To explain what the customer needs. ii. To establish a basis for the creation of software design. iii. To devise a set of

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