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

Software design by using stacks and queues, Instructions: For this assignm...

Instructions: For this assignment, you will be using stacks and queues to solve a maze in a couple of different ways. You are supplied with code to start you off. When run, it ope

What is the consistency issue raised by state transfer, QUESTION (a) Ex...

QUESTION (a) Explain why making some replica managers read-only may improve the performance of a gossip system. (b) In the gossip architecture, why does a replica manager ne

Different phases of the rational unified process, Problem: (a) Briefly...

Problem: (a) Briefly explain the different phases and workflows of the Rational Unified Process. (b) What are the two benefits that might be gained when using such a life-c

Data dictionay, explaination

explaination

What is code review, A meeting at which software code is presented to proje...

A meeting at which software code is presented to project personnel, users, managers, customers, or other interested parties for approval or comment. Contrast with code audit, cod

Explain special value testing, Special Value Testing: It is the form of fu...

Special Value Testing: It is the form of functional testing. Special value testing happens when a tester uses his or her domain knowledge, experience with same program and informa

What is v- diagram (model), What is V- Diagram (model)? Ans) A diagram t...

What is V- Diagram (model)? Ans) A diagram that imagine the order of testing activities and their corresponding phases of growth

Transform mapping and transaction mapping, how was transform mapping like?

how was transform mapping like?

Use cases, 1. Perform a requirements analysis for the Case Study. Express t...

1. Perform a requirements analysis for the Case Study. Express the results using the following artefacts: a. A use case diagram for the functional requirements of the entire

State lehman first law, State Lehman's First law A program that is used...

State Lehman's First law A program that is used in real world environment of necessity must change or become progressively less useful in that environment.

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages