Discuss in detail about data modeling, Software Engineering

Assignment Help:

Discuss in detail about data modeling.

  • Data modelling makes use of the ERD.
  • Consists of three interconnected information.

The data object.

Attributes.

Relationships.

Cardinality and Modality

  • Cardinality means the specification of the number of occurrences of one object that can be linked to the number of occurrences of another object.
  • One-to-one cardinality.
  • One-to-many cardinality.
  • Many-to-Many cardinality.
  • Modality of a relation is 0 when no explicit relationship or relation is optional.
  • Modality is 1 when occurrence of relationship is mandatory.

Entity/Relationship Diagrams

  • Elements are

Data Objects.

Attributes.

Relationships.

Various type indicators.

 


Related Discussions:- Discuss in detail about data modeling

Explain defect, Explain Defect? Ans) 1) From the producer's viewpoint: a...

Explain Defect? Ans) 1) From the producer's viewpoint: a product needs that has not been met or a product attribute possessed by a product or a function perform by a product tha

What are the virtues of incremental model, What are the virtues of incremen...

What are the virtues of incremental model? i. The incremental model can be adopted when there are less number of persons associated with the project. ii. Technical risks can

Define evolutionary prototyping, Evolutionary prototyping: Evolutionary Pr...

Evolutionary prototyping: Evolutionary Prototyping (also called as breadboard prototyping) is quite dissimilar from Throwaway Prototyping. The main goal when using Evolutionary Pr

Discuss the various strategies of design, Discuss the various strategies of...

Discuss the various strategies of design.  The design strategies are:      Functional design:   The system is designed from a functional viewpoint, initialising from with a

State the technique pilot used in software engineering, State the technique...

State the technique Pilot used in software engineering With this approach, new system is introduced into one part of the company (for example into one warehouse of a supermark

What is requirement elicitation methods, Q. What is requirement elicitation...

Q. What is requirement elicitation methods? Subsequent to receiving the problem statement from the customer the first step is to arrange a meeting with the customer. During the

What is mutation testing, Mutation testing is type of software testing wher...

Mutation testing is type of software testing where our goal is to make mutant software fail, and therefore demonstrate the adequacy of our test case.

Word processing software, Word Processing Software: Word processing is...

Word Processing Software: Word processing is one of the most wide spread applications software types in use today. Developed as a successor to primitive text-editors that re o

Black box and white box testing, I am not properly understanding the basis ...

I am not properly understanding the basis difference between black box testing and white box testing. Please explain in simple way and with some example so that I can easily under

Illustrate parameterization in qtp, Illustrate parameterization in QTP. ...

Illustrate parameterization in QTP. - Parameterization - Passing values from external source into script. - The number of values passed can be single or multiple. - It he

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