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

What do you understand by the term integrity, Question: (a) What do yo...

Question: (a) What do you understand by the term "integrity"? (b) Which type of attack denies authorized users access to network resources? (c) You have discovered tha

What is function point, What is function point? Function point is the s...

What is function point? Function point is the size of measure it is also used to calculate approximately the software cost. Function point (FP)=Function Count (FC) * Value a

What are the properties of the software, What are the properties of the sof...

What are the properties of the software? Software is engineered, not manufactured. Software is free of wear out. Most software is built as required rather than being asse

Determine the software development models, Determine the Software developme...

Determine the Software development models Software Engineering deals with development of software. Thus, understanding the basic characteristics of software is essential. Softw

Fan out Fan In, Explain fan out and fan in with example.

Explain fan out and fan in with example.

What is the use of a data flow diagram, What is the use of a data flow diag...

What is the use of a data flow diagram? A data flow diagram is used to represent the functional view of an application domain. It represents all the significant business proces

Differentiate between regression testing and re-testing, Differentiate betw...

Differentiate between regression testing and re-testing - Re-testing: - It means testing a single defect that was just fixed. Only one test is performed here. - The ta

Inmagic plus- microcomputer based software package, INMAGIC Plus: INMA...

INMAGIC Plus: INMAGIC Plus is a microcomputer- based software package designed to build, maintain and use textual databases including bibliographic databases. As a generalised

What are the important points to do software design, What are the important...

What are the important points to do software design The below points must be kept in mind when performing the design:  i) Practicality: This ensures that system is stable

Define the meaning of code inspection, Define the meaning of Code Inspectio...

Define the meaning of Code Inspection - A formal testing technique where programmer reviews source code with a group who ask questions analyzing program logic, analyzing code

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