Explain about the e-r diagram, Software Engineering

Assignment Help:

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 is a process oriented model. ER diagram represent data at rest whereas DFD tracks the motion of data.

ERD doesn't provide any information regarding functionality of data. It has 3 main components - data entities, their relationships and their associated attributes.

 

 


Related Discussions:- Explain about the e-r diagram

Functional testing and structural test, Differentiate between functional te...

Differentiate between functional testing and structural testing. Functional testing also known as behavioural testing or  Black box testing. In this methods, tester design te

Which phase is not available in software life cycle, Which phase is not ava...

Which phase is not available in software life cycle? Abstraction is the only phase which in not available in software life cycle

Software myth, how does software myth affects software process

how does software myth affects software process

What is system test, An activity in which a system or component is implemen...

An activity in which a system or component is implemented under specified conditions, the results are observed and an evaluation is made of some problem of the system or component.

Discuss the problems faced during software maintenance, Q. Discuss the prob...

Q. Discuss the problems faced during software maintenance? The most significant problem during maintenance is that before correcting or else modifying a program the programmer

Open source software, what are the advantages of open source software?

what are the advantages of open source software?

System analysis , a) There are four steps or activities in needs engineerin...

a) There are four steps or activities in needs engineering: elicitation, specification, validation, and negotiation. Briefly explain the task of every of the four steps. Why needs

Explain regression testing, Regression test cases which a program has previ...

Regression test cases which a program has previously implemented correctly in order to detect errors spawned by changes or corrections done during software development and maintena

Explain about virtual memory, Explain about Virtual memory Virtual memo...

Explain about Virtual memory Virtual memory is a method used in some large computer that permit the user to construct programs as by a large memory space were available, equal

What is function point, Q. What is function point? Ans. Function po...

Q. What is function point? Ans. Function point methods the functionality from the user point of view that is on the basis of what the user request and receives in return. C

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