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

Managing variability, 1.    McM Cog is a supplier of industrial parts.  Mos...

1.    McM Cog is a supplier of industrial parts.  Most orders are received at a call center. The call center currently has 10 phone lines total, i.e., a maximum of 10 callers may b

implicit and explicit conceptual model, difference between implicit and ex...

difference between implicit and explicit conceptual model

What is boundary value analysis, Q. What is Boundary Value Analysis? B...

Q. What is Boundary Value Analysis? Boundary Value Analysis: It is extensively recognized that input values at the extreme ends of input domain cause more errors in system. M

Explain sci, What is SCI? Software Configuration Item is information th...

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

Software Metrics, How to interpret software metrics(any metrics)...i need a...

How to interpret software metrics(any metrics)...i need an example

Evaluate the total costs for johns project, Question: (a) Show two mai...

Question: (a) Show two main approaches to identify risk in a project. (b) John finds that IOE recovers some overheads as oncosts on direct staff costs although others are

Indexing -micro cds/isis application, Indexing: The CDS/ISIS package i...

Indexing: The CDS/ISIS package indexes all fields selected for indexing into a single file. This file is known as 'inverted file'. There are indexing techniques for building i

What is gamma testing, Gamma testing is testing of software that does have ...

Gamma testing is testing of software that does have all the needed features, but did not go by all the in-house quality checks.

Explain software reliability, Software Engineering 1. Discuss the Limit...

Software Engineering 1. Discuss the Limitation of linear sequential model in software engineering. 2. Explain Software reliability? Why reliability is more important than ef

Testing, cause effect testing

cause effect testing

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