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

Explain the software design process, What is the work product of software d...

What is the work product of software design process and who does this? A design model that encompasses architectural, component level, interface and their representations is t

State the requirements analysis of SDLC, Requirements Analysis of SDLC ...

Requirements Analysis of SDLC Requirements describe "What" of a system. Objectives which are to be achieved in Software process development are requirements. In requirements a

Explain the prototyping approaches in software process, Explain the prototy...

Explain the prototyping approaches in software process. Two approaches i. Evolutionary prototyping - In this approach of system development, the initial prototype is prepare

Explain iterative enhancement model, Explain Iterative Enhancement model ...

Explain Iterative Enhancement model Iterative Enhancement model: This model incorporates alters in the software based on the analysis of the existing system. Also the complet

State entity and relationship diagram, State Entity /Relationship diagram. ...

State Entity /Relationship diagram. ERD depicts relationships among data objects. The ERD is the notation that is used to conduct the data modeling activity. The primary

Determine the various levels of testing, Determine the various levels of te...

Determine the various levels of testing The following are various levels of testing: Large systems are built out of subsystems which are made up of modules, modules of funct

Software licesnse, what are the main characteristics of software lease

what are the main characteristics of software lease

What is cardinality in data modelling, What is cardinality in data modellin...

What is cardinality in data modelling? Cardinality in data modeling, cardinality verifies how the number of occurrences of one object is related to the number of occurrences of

What is the difference between testing and quality assurance, Differentiate...

Differentiate between testing and QA. - Quality Assurance is more a preventive thing, which ensures quality in company and hence the product instead of just testing the product

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