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

Problems that are faced during maintenance of software, Q. Discuss some of ...

Q. Discuss some of the problems that are faced during maintenance of software? - Habitually another person or group of persons working over the years in isolation from each oth

How to build the structure chart, Q. How to build the Structure Chart? ...

Q. How to build the Structure Chart? Building the Structure Chart Processes in the DFD are liable to represent one module on the structure chart Efferent processes

What are the common approaches in debugging, What are the common approaches...

What are the common approaches in debugging? Brute force method: The memory dumps and run-time tracks are explained and program with write statements is loaded to get clues to

Write definition of erd, Write definition of ERD? Entity Relationship D...

Write definition of ERD? Entity Relationship Diagram shows the graphical presentation of the object relationship pair. It is above all used in database applications.

What is class diagram, Class diagram: A class diagram in the Unified Model...

Class diagram: A class diagram in the Unified Modelling Language (UML) is a type of static structure diagram that defines the structure of a system by showing the system's classes

Structured analysis - software engineering, Structured Analysis Model ...

Structured Analysis Model Structured  analysis is  the  most  broadly  used  of  needs  modeling  techniques,  relies  on  flow modeling and data modeling to build the basis f

What is data binding, What is Data Binding?    The matrix that attempts...

What is Data Binding?    The matrix that attempts to capture the module-level concept of coupling is data binding. Data binding are a calculate that captures the data interacti

What are the benefits of modular design, What are the benefits of modular d...

What are the benefits of modular design? Changes made during testing and maintenance becomes manageable and they do not affect other modules.

#title.help with labs for Rabbit 4000, I need help two thing 1-understand h...

I need help two thing 1-understand how can I programme rabbit 4000 2- do labs set for Rabbit 4000

Software development model, how do risc factor affect a spiral model of sof...

how do risc factor affect a spiral model of software development

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