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

Illustrate about the behavioural model, Illustrate about the Behavioural mo...

Illustrate about the Behavioural model Behavioural model defines: Data of proposed system. (i)  The internal functioning of proposed system,  (ii)  Inter-relationship

What is technical review, A technical review is the review that refers to c...

A technical review is the review that refers to content of the technical material being reviewed.

What are the tools mainly used for information gathering, What are the tool...

What are the tools are mainly used for information gathering 1.  Record review: A review of recorded documents of organisation is performed.Manuals procedures, forms and book

Explain debugging, The act of attempting to verify the cause of the symptom...

The act of attempting to verify the cause of the symptoms of malfunctions noticed by testing or by frenzied user complaints.

Explain the meaning of the three-tier architecture, QUESTION (a) Explai...

QUESTION (a) Explain the meaning of the three-tier architecture (b) An Internet banking system can be said to be based on a three-tier architecture. Illustrate this with a d

#, Write the algorithm to print at list of numbers from 1 to 5 and there s...

Write the algorithm to print at list of numbers from 1 to 5 and there square

Whta is boundary value analysis, Boundary Value Analysis:    It's widely ex...

Boundary Value Analysis:    It's widely examined that input values at the extreme ends of input domain cause more errors in system. More application errors happen at the boundaries

Evaluate the usefulness of roce, Present an evaluation of the current perfo...

Present an evaluation of the current performance of your chosen company using ROCE, RI, EVA and SVA.  (All figures employed should be up to date , clearly explained / justified an

Explain basis path testing, Explain Basis Path Testing? Ans) Basis path ...

Explain Basis Path Testing? Ans) Basis path testing is a white-box method. It permits the design and definition of a basis set of execution paths. The test cases created from th

What is system simulation, What is System Simulation? Normal 0 ...

What is System Simulation? Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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