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

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 sci, What is SCI? Software Configuration Item is in order that ...

What is SCI? Software Configuration Item is in order that is carried as part of the software engineering process.

What is version description document, Explain version description document ...

Explain version description document (VDD)? Ans) Version description document (VDD) is a document that accompanies and signifies a given version of a software product. Typically

What are the problems in comes in SRS, What are the Problems in comes in SR...

What are the Problems in comes in SRS There are numerous features which make requirements analysis difficult. These are explained below: 1. Complete requirements are diffic

Explain the process of black box testing, Explain the process of Black box ...

Explain the process of Black box testing  This is applied during the later stage of testing.  It enables software developer to derive a set of input conditions which will fully

Define brooks law, Define Brooks law. Software was delivered late, was ...

Define Brooks law. Software was delivered late, was not reliable, cost various times the original estimates and often exhibited poor performance characteristics.

Explain performance testing, Performance testing signifies loads, volumes, ...

Performance testing signifies loads, volumes, and response times, as described by requirements. Although performance testing is a part of system testing, it can be regarded as a ex

What is equivalence class testing, Q. What is Equivalence class testing? ...

Q. What is Equivalence class testing? Equivalence class testing is based on the partitioning the input domain of a program into a number of equivalence classes so that the test

What is software configuration management, What is Software configuration m...

What is Software configuration management? ans)Software Configuration Management (SCM) is the control and the recording of alter that are made to the software and documentation

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