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 is statement testing, Testing to satisfy the criterion that every stat...

Testing to satisfy the criterion that every statement in a program be implemented at least once during program testing.

Give the procedure of the delphi method, Give the procedure of the Delphi m...

Give the procedure of the Delphi method. 1. The co-ordinator presents a specification and estimation form to all experts. 2. Co-ordinator calls a group meeting where the exp

What is data binding, What is Data Binding?    The matrix that attempts...

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

Explain a variable, Explain a variable? "Variables" are data items in a ...

Explain a variable? "Variables" are data items in a program whose values can change.

List flaws in waterfall model, List flaws in waterfall model. - The big...

List flaws in waterfall model. - The biggest drawback is that you don't test the application logic until very late in development cycle. - Though a detailed system specifica

Explain about the software testing strategies, Explain about the software t...

Explain about the software testing strategies. A method approach to software testing. Verification and Validation. Verification refers to the set of activities tha

Unix, A friend has promised to log in at a particular time. However, he nee...

A friend has promised to log in at a particular time. However, he needs to be contacted as soon as he logs in. The shell script checks after every minute whether he has logged in o

State the both cardinality and modality, Define Cardinality & Modality. ...

Define Cardinality & Modality. Cardinality: Specification of the number of occurrences of one that can be correlated to number of occurrences of another. Modality: The Moda

Software testing, Discuss the limitations of software testing. How do we sa...

Discuss the limitations of software testing. How do we say that complete testing is impossible?.

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