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

Event procedure and a general procedure, (a) Visual Basic is governed by an...

(a) Visual Basic is governed by an event processor. Explain the meaning of this phrase. (b) Differentiate between an event procedure and a general procedure. (c) "For datab

Discuss the system quality attributes, Question 1 What are the advantages ...

Question 1 What are the advantages and disadvantages of layered systems? Question 2 Discuss the system quality attributes Question 3 Discuss the six components of

Why software change happens, Why software change occurs? Software chang...

Why software change occurs? Software change occurs because of the following reasons. New requirements appear when the software is used. The business atmosphere changes. E

Explain the design principles, Explain the design principles. The d...

Explain the design principles. The design process should not endure from tunnel vision. The design should be traceable to the analysis model. Design should not re

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

Software modelling, Enterprise software platforms are designed to simpl...

Enterprise software platforms are designed to simplify complex enterprise problems for the development, deployment, and maintenance of multi-tier enterprise solutions. In

Srs, Why SRS document is also called as boack-box specification of a system...

Why SRS document is also called as boack-box specification of a system

What are the drawbacks of rad model, Mention some of the drawbacks of RAD m...

Mention some of the drawbacks of RAD model. Unuseful for a large-scale projects. Interest of developers & customers are necessary. Not useful and perfect when technica

Write about drivers and stubs, Write about drivers and stubs. Drivers a...

Write about drivers and stubs. Drivers and stub software require to be developed to test incompatible software. The " driver" is a program that accepts the test data and pri

Write note on arm processor, Question 1 Explain the categories of Embedded...

Question 1 Explain the categories of Embedded Systems Question 2 Write a note on Serial Interface in 8051 Question 3 Explain the various types of addressing modes in 805

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