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 equivalence partitioning, Describe Equivalence Partitioning An...

Describe Equivalence Partitioning Ans) Input data of a program is separated into different categories so that test cases can be developed for every category of input data. The g

What is unit testing explain, Q. What is Unit testing explain ? Unit t...

Q. What is Unit testing explain ? Unit testing: Unit testing is undertaken after a module has been coded and successfully reviewed. Unit testing (or module testing) is the te

Discuss in details about rapid prototyping techniques, Discuss in details a...

Discuss in details about rapid prototyping techniques. Executable specification languages. Used to animate the system specification. It is shown in a formal, mathemati

Explain incremental testing, Incremental integration testing is permanent t...

Incremental integration testing is permanent testing of an application as new functionality is recommended. This may need that various aspects of an application's functionality are

Explain the software design process, What is the work product of software d...

What is the work product of software design process and who does this? A design model that encompasses architectural, component level, interface and their representations is t

two fetch-execute cycles, Consider an 8-bit system with 32 memory location...

Consider an 8-bit system with 32 memory locations (numbered from 0 to 31) and 8 different instructions. Assume op code for "Load Accumulator" instruction is 5 10  and for "Add" ins

Data Flow Diagram, I need help creating a DFD for an assignment. Is there a...

I need help creating a DFD for an assignment. Is there anyway you could help?

Draw the data flow diagram, Go to Blackboard, and print the project scenari...

Go to Blackboard, and print the project scenariolocated under the Project folder. Using Visio, draw a Physical DFD ofall three business processes described in theproject scenario.

Determine the higher order programming languages, Determine the Higher orde...

Determine the Higher order programming languages Higher order programming languages such as COBOL and PASCAL came into existence. Use of these made programming much easier. In

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