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 methodology, how to choose a software methodology for a software p...

how to choose a software methodology for a software project

Define the procedural abstraction, State Procedural abstraction. A Pro...

State Procedural abstraction. A Procedural abstraction is a named series of commands that has a specific and limited function. Eg: Open Walk to the door, reach out & grasp

Explain the length of identifiers, Explain the Length of identifiers L...

Explain the Length of identifiers Length of identifiers :-  This is a measure of the average length of separate identifiers in a program. The longer the identifiers, the more

What is validation testing, What are the conditions exists after performin...

What are the conditions exists after performing validation testing? After performing the validation testing there exists two conditions. The function or performance characteris

Static single variable model and static multivariable model, Q. Static sing...

Q. Static single variable model and static multivariable model? Static single variable model : Methods using this model utilize an equation to estimate the desired value such

What is walkthrough, What is Walkthrough? Ans) Usually, a step-by-step s...

What is Walkthrough? Ans) Usually, a step-by-step simulation of the implementation of a procedure, as when walking by code, line by line, with an imagined set of inputs. The wor

Software development, SOFTWARE DEVELOPMENT: Software development is a ...

SOFTWARE DEVELOPMENT: Software development is a human activity. It involves a clear understanding of the field of application, such as library and information science; knowled

Diffrence between object and function oriented design, Q. Differentiate bet...

Q. Differentiate between object oriented and function oriented design. Ans: • Function-oriented design depend on identifying functions which transform their inputs to create

Advanced software engineering, Is there ever a case when the generic activi...

Is there ever a case when the generic activities of the software engineering process don’t apply?

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