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 iso 9000, Explain ISO 9000 ISO 9000 An international set o...

Explain ISO 9000 ISO 9000 An international set of standards for quality management. Applicable to a range of organisations from manufacturing to service industries.

Write definition of software process, Write definition of software process....

Write definition of software process. Software process is termed as the structured set of doings that are required to develop the software system.

What is intrusive testing, Testing that collects timing and processing info...

Testing that collects timing and processing information during program implementation that might change the behavior of the software from its behavior in a actual environment. Usua

Iterative Enhancement Model, what is the advantage of Iterative Enhancement...

what is the advantage of Iterative Enhancement Model in developing a system?

What does data abstraction contains, What does Data abstraction contains? ...

What does Data abstraction contains? A Data abstraction is a named collection of data that defines a data object Eg: door Attributes: door type, Opening mechanism, Swing di

Explain beta testing, Beta testing is testing an application when developme...

Beta testing is testing an application when development and testing are essentially done and final bugs and troubles require to be found before the final release. Beta testing is t

Compare the manpower and development time, Q. Compare the Manpower and deve...

Q. Compare the Manpower and development time? Manpower may perhaps refer to labour Manpower either an abstract term for human labour effort as opposed to machines, animals a

Draw a use case diagram, QUESTION (a) Draw a use case diagram (UCD) for...

QUESTION (a) Draw a use case diagram (UCD) for the given case study. For any one use case give a detail use case specification (b) Describe the different phases and workflow

What is verification, Q. What is verification? Ans. Verification is...

Q. What is verification? Ans. Verification is the procedure of determining whether the output of one phase of software development conforms to that of its previous phase wh

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