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

Incrementa lprocess model, name some software in which incremental process ...

name some software in which incremental process are used or possible to use it?

Explain project estimation techniques, Question: a) List and explain t...

Question: a) List and explain three project Estimation techniques. b) During an estimation exercise, a work breakdown structure (WBS) is used as checklist for the activitie

Data Flow Diagram, I need help creating a DFD for an assignment. Is there a...

I need help creating a DFD for an assignment. Is there anyway you could help?

What is prototyping approaches in software process, What is prototyping app...

What is prototyping approaches in software process? i. Evolutionary prototyping - In this approach of system development, the initial prototype is prepared and it is then refin

Srs, Why is SRS document known as black box specification of a system

Why is SRS document known as black box specification of a system

Explain the design steps of the transform mapping, Explain the design steps...

Explain the design steps of the transform mapping. Review the fundamental model. Review and refine the DFD for the software. Verify whether the DFD has the transf

What is infeasible path, Explain Infeasible Path? Program statement sequ...

Explain Infeasible Path? Program statement sequence that can never be implemented.

Illustrate the example of data dictionary of payroll, Illustrate the exampl...

Illustrate the example of Data dictionary of payroll Data dictionary of payroll may include below fields: PAYROLL   = [Payroll Details] = @ employee name + employee + id

Project tracking, project tracking and overview of project process?

project tracking and overview of project process?

Distinguish among alpha and beta testing, Distinguish between alpha and bet...

Distinguish between alpha and beta testing. Alpha and beta testing are the kinds of acceptance testing. Alpha test: The alpha testing is attesting in which the version of compl

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