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

Define fan-in and fan-out, Define Fan-in & Fan-out. Fan-out - A measure...

Define Fan-in & Fan-out. Fan-out - A measure of the number of modules that are directly controlled by another module. Fan-in-  Shows how many modules directly control a give

What is the work product of software design process, What is the work produ...

What is the work product of software design process and who does this? A design model that encompasses architectural, interface, component level and their representations is th

Calculate the values of software, Q. For the program given below, calculate...

Q. For the program given below, calculate the values of software science measures like ? , N, V, E and λ . int. sort (int x[], int n) { int i, j, save, im1; /

CRT, EXPLAIN THE WORKING OF CRT?

EXPLAIN THE WORKING OF CRT?

Write a valid schema for the container, A storage tank has a container to k...

A storage tank has a container to keep a certain amount of fuel and it also has an indicator to inform about the level of fuel inside the container. The container cannot exceed

What is software metric, What is Software metric? Any type of measureme...

What is Software metric? Any type of measurement which relate to a software system, process or related documentation Lines of code in a program, the Fog index, number of

Disadvantage of software package, Disadvantage of Software package: Th...

Disadvantage of Software package: There are some disadvantages which need to be looked into. They are:  i)  A commercial software package will have a number of built-in

Explain the software architecture, What is software architecture? The ...

What is software architecture? The software architecture of a program or computing system is the structure or structures of the system, which comprises software methods, the e

Data modeling and normalization, The task in this project is to design a no...

The task in this project is to design a normalized database that could be used to collect and store information for a video rental outlet. The database should be structured to s

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