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 does level0 dfd means, What does Level0 DFD means? Level0 DFD is c...

What does Level0 DFD means? Level0 DFD is called as 'fundamental system model' or 'context model'. In the context model the total software system is represented by a single bub

Discuss in details the design principles, Discuss in details the design pri...

Discuss in details the design principles. The design process is free from tunnel vision. The design should be observable to the analysis model. Design should not reinv

Why is good design important for a product, Q. Why is good design important...

Q. Why is good design important for a product? Ans: A superior design is the key to successful product. Almost 2000 years previously a Roman Architect recorded the followin

Key process areas of capability maturity model (cmm), Key process areas of ...

Key process areas of Capability Maturity model (CMM) Effectiveness, Predictability and control of an organization's software processes are believed to get better as the organiz

What are the different rapid prototyping techniques, What are the different...

What are the different Rapid prototyping techniques? i. Dynamic high level language development. ii. Database programming. iii. Component and application assembly.

Software Engineering environments, 1.1 Discuss possible ramifications of th...

1.1 Discuss possible ramifications of these opposing objectives on the project. What would you do if you were the manager?

Compare and contrast reliability and availability, Q. Compare and contrast ...

Q. Compare and contrast reliability and availability? Ans. Reliability: The probability of failure-free system operation over a specified time in a given environment for a gi

What is meant by software prototyping, What is meant by software prototypin...

What is meant by software prototyping? Software prototyping is a process of creating a model for the software product. This is developed based on the currently known requiremen

Define the quality control, Quality Control Quality control is a method...

Quality Control Quality control is a method in which the product's quality is compared with standards and corrective actions taken if needed. Quality control activities focus o

What is software metric, What is software metric? A Software metric is...

What is software metric? A Software metric is a easy quantitative measure derivable from any attribute of the software life cycle (E.g.) LOC (Line Of Code) Function poin

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