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 are the benefits of prototyping, What are the benefits of prototyping?...

What are the benefits of prototyping? i. Prototype serves as a basis for deriving system specification. ii. Design quality can be improved. iii. System can be maintained

Explain about the incremental model, Explain about the incremental model. ...

Explain about the incremental model. Have same phases as the waterfall model. Phases are Analysis. Design. Code. Test. Incremental model deliver

What is data binding, Q. What is Data Binding? Ans. The matrix that at...

Q. What is Data Binding? Ans. The matrix that attempts to imprison the module-level concept of coupling is data binding. Data binding are a calculate that captures the data in

How can we use spiral model in large-scale systems, Q. How can we use Spira...

Q. How can we use Spiral model in large-scale systems? Spiral model is as well known as spiral life cycle model is the system development life cycle model utilized in informati

Define object and class associations, Q. Define Object and class associatio...

Q. Define Object and class associations? Object/class associations:- Objects/classes interact with each other. Multiplicity defines how many instances of one object/class can

Explain cyclomatic complexity, What is cyclomatic complexity? Cyclomati...

What is cyclomatic complexity? Cyclomatic complexity is software metric that gives the quantitative measure of logical complexity of the program. The Cyclomatic complexity e

Registers, which are the invisible registers?

which are the invisible registers?

Models, what are draw backs or disadvantages of waterfall model

what are draw backs or disadvantages of waterfall model

Perform risk analysis during software testing, Describe how to perform Risk...

Describe how to perform Risk Analysis during software testing. While a test plan is being formed, risks involved in testing the product are to be taken into consideration with

What are the tools of environmental model, What are the Tools of environme...

What are the Tools of environmental  model (i)  Statement of purpose: It indicates basic objectives of system. (ii)  Event list: It describes different events of system

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