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

Define the system requirements, What is meant by System Requirements? ...

What is meant by System Requirements? Place the system services and constraints in detail. Serves as a link between the system purchaser & the system developer.

What is v- diagram (model), What is V- Diagram (model)? Ans) A diagram t...

What is V- Diagram (model)? Ans) A diagram that imagine the order of testing activities and their corresponding phases of growth

Describe software maintenance and it types, Software Engineering 1. Giv...

Software Engineering 1. Give the two roles of the software process. 2. Describe software maintenance and it types. 3. What is RAD model and its phases? 4. What do you

Draw E-R diagram for the given situation, Draw E-R diagram for the followin...

Draw E-R diagram for the following situation An account is a relationship between customer and bank. A customer has a name. A bank has a branch. A customer may have numerous ac

Cohesion, Identify the type of cohesion in the following statements: 1. Co...

Identify the type of cohesion in the following statements: 1. Compute average daily temperatures at various sites 2. Initialize sums and open files 3. Create new temperature recor

Determine the cyclomatic complexity, Q. Consider the program given below ...

Q. Consider the program given below void main() { int i,j,k; readln (i,j,k); if( (i k) ) { writeln("then part"); if (j writeln ("j

What is performance testing, What is performance testing? Performance t...

What is performance testing? Performance testing is intended to test the run-time performance of software within the context of an integrated system.

Write the problems with the cmm, Write the Problems with the CMM. Prac...

Write the Problems with the CMM. Practices associated with model levels Companies could be using practices from dissimilar levels at the same time but if all practices

What is integration testing, What is Integration testing: - This test i...

What is Integration testing: - This test is performed to determine the interfaces among system components, interactions between the application and the hardware, file system, a

Software risks, risks and types of software risks

risks and types of software risks

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