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

State the strategies of software testing, State the strategies of Software ...

State the strategies of Software testing Two testing strategies are present. i) Code Testing: Code testing strategy examines the logic of the system.  In this, analyst deve

Frame diagrams, We discussed the importance of framing a problem in order t...

We discussed the importance of framing a problem in order to understand the problem better and be able to develop a solution more quickly and easily. In this homework, you are ask

Incremental model, four circumstances where incremental model is appropriat...

four circumstances where incremental model is appropriate?

What tasks do checkpoints perform in QTP, What tasks do checkpoints perform...

What tasks do checkpoints perform in QTP? Checkpoints in QTP are used to verify information which is expected to be displayed when running test. Following are 8 types of availa

Explain the process specification, Define Process Specification . Proces...

Define Process Specification . Process Specification is used to clarify all flow model processes that appear at the final level of refinement. Check & Convert pressure

What is test schedule, The test schedule is a schedule that signifies all t...

The test schedule is a schedule that signifies all tasks needed for a successful testing effort, a schedule of all test activities and resource needs.

SYSTEM ANALAYSIS AND DESIGN , #questionHomes R Us is a group of large depar...

#questionHomes R Us is a group of large department stores who wish to improve the customer service they decide they need a database to capture and store information relating to cus

Explain the term - code complete, Explain the term - Code Complete - Ph...

Explain the term - Code Complete - Phase of development where functionality is implemented completely with only bug fixes remaining. - All functions from functional specific

Encapsulation, Illustrate the use of the concept Encapsulation.

Illustrate the use of the concept Encapsulation.

Class Diagram, I want class diagram for real estate property portal

I want class diagram for real estate property portal

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