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

Distinguish software faults and software failures, Distinguish software fau...

Distinguish software faults and software failures Ans: In case of a failure, the software does not do what the user expects. A fault is a programming error that may or may not

What is requirement traceability matrix, Requirement traceability matrix ...

Requirement traceability matrix RTM is a matrix tying up needs with the testcases. It is a way of making sure that each requirement has a corresponding testcase which will be t

Explain in detail about structural modelling, Explain in detail about Struc...

Explain in detail about Structural Modelling. Structural model contains a detail refinement of ERD, data flow model and control flow model. Creating an ERD. Examp

What are the testing strategies for conventional software, What are the var...

What are the various testing strategies for conventional software? i. Unit testing ii. Integration testing. iii. Validation testing. iv. System testing.

What is configuration management, What is configuration Management? Sof...

What is configuration Management? Software Configuration management (SCM) is the task of tracking and controlling alters in the software. Configuration management practices con

Constructor, what is constructor overloading

what is constructor overloading

Calculate capacity of a cluster for this disc, A multiplattered HDD is for...

A multiplattered HDD is formatted into twenty sectors and 16 hundred cylinders. There are eight platters and 16 R/W heads. The total capacity of the disc is 1GB. A cluster of data

What are the controlling events between objects, What are the Controlling E...

What are the Controlling Events Between Objects Event is the specification of a important occurrence which has a location in time and space. Examples of events are flight l

How print statements used in software testing, Q. How Print statements used...

Q. How Print statements used in Software testing? Print statements:-The standard print statement in the language being utilized is sprinkled throughout the program to output va

What are the different types of cohesion, What are the different types of C...

What are the different types of Cohesion? i. Coincidentally cohesive -The modules in which the set of tasks are related with each other loosely then such modules are called as

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages