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 is oo system testing, OO system testing is actually identical to its c...

OO system testing is actually identical to its counterpart in the procedural environment.

How messages can be used in software engineering, Q. How Messages can be us...

Q. How Messages can be used in software engineering? Messages:- The interaction or communication between the different objects and classes is done by passing messages. The ob

Produce a use case diagram, ZeroJet, a new low cost airline, wants a brand ...

ZeroJet, a new low cost airline, wants a brand new web-based system to allow people to book seats for flights on-line.  They want an automated check in system which has no staff.

Distribution of the package, Distribution of the Package: In the last ...

Distribution of the Package: In the last 12 years of its existence CDS/ISIS software has become one of the most popular packages of its kind. It is estimated that there are ab

What is stochastic testing, Stochastic testing is the similar as "monkey te...

Stochastic testing is the similar as "monkey testing", but stochastic testing is a lot more technical sounding name for the similar testing process.

What is fault, A manifestation of an error in software. A fault, if encount...

A manifestation of an error in software. A fault, if encountered, might cause a failure.

Explain agent-oriented programming languages, Question: (a) Name two a...

Question: (a) Name two agent-oriented programming languages. (b) Distinguish between communication protocols and interaction protocols for agent systems. Give two example

What is the use of a data flow diagram, What is the use of a data flow diag...

What is the use of a data flow diagram? A data flow diagram is used to represent the functional view of an application domain. It represents all the significant business proces

Define the types of requirements management, Define the types of Requiremen...

Define the types of Requirements management Requirements management comprises the below processes: 1. Identifying controls and tracking requirements. 2. Checking complete

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