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

Discuss in details about functional modeling, Discuss in details about Func...

Discuss in details about Functional Modeling. This model describes the computations that take part within a system. This model is helpful when the conversion from the inp

Design and implementation constraints, The Clue-Less system shall operate w...

The Clue-Less system shall operate with the following Web browsers: Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, and Safari. OE-2: The Clue-Less system shall

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

Explain iterative development model in detail, Problem 1. Explain Itera...

Problem 1. Explain Iterative Development Model in detail 2. Explain the Incremental Development Model in detail 3. What are the major technical and non-technical factors whic

What is vo browser extension, What is VO browser extension? - It is a S...

What is VO browser extension? - It is a SilkTest add-on component to test Web applications. - To identify browser-rendered objects it employs sophisticated pattern recogniti

What is meant by software prototyping, What is meant by software prototypin...

What is meant by software prototyping? Software prototyping is a process of creating a model for the software product. This is developed based on the currently known requiremen

What are different severity ratings in a project, What are different severi...

What are different severity ratings in a project? There can be 4 types of severity ratings in a table: i.) Severity 1 - Showstoppers - Don't allow application to move at

What is a user guide, The "user guide" is the similar as the user manual. T...

The "user guide" is the similar as the user manual. The user guide is a document that shows information essential to employ a system or component to get the desired results. Typica

What is software re-engineering, What is software re-engineering? No fu...

What is software re-engineering? No functionality is added to the system. Rather than, the system is modified to compose it easier to understand and change. System re-engineeri

Determine about the bottlenecks of performance testing, What kinds of bottl...

What kinds of bottlenecks can be expected in performance testing? Bottlenecks in performance testing can have below effects: - It can affect the performance and the scalabil

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