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

#title., Ask EXPLAIN GENERIC PROCESS MODEL & REQUIREMENT ENGINEERING PROCE...

Ask EXPLAIN GENERIC PROCESS MODEL & REQUIREMENT ENGINEERING PROCESSquestion #Minimum 100 words accepted#

Advantage of software life cycle model, Q. Advantage of software life cycle...

Q. Advantage of software life cycle model? The advantage of this model is the wide range of options to accommodate the good features of outer life cycle models. It becomes equi

Ftr, EXPLAIN ABOUT DEFECT AMPLIFICATION AND REMOVAL IN SOFTWARE ENGINEERING...

EXPLAIN ABOUT DEFECT AMPLIFICATION AND REMOVAL IN SOFTWARE ENGINEERING

Explain path testing, Testing to satisfy coverage criteria that every logic...

Testing to satisfy coverage criteria that every logical path by the program be tested. Often paths by the program are grouped into a finite set of classes. Single path from every c

What is process involved in maturity levels in seis cmm, What is process in...

What is process involved in maturity levels in SEIs CMM. Level 1: Initial - a small number of processes are defined and individual efforts are taken. Level 2: Repeatable - T

What is the meaning of real time system, What is the meaning of Real time s...

What is the meaning of Real time system? Real time system is a software system where the correct functionalities of the system are dependent upon results evaluated by the syste

Driven development, what is driven development?give example what benifit of...

what is driven development?give example what benifit of driven development

What is stepwise refinement, Q. What is stepwise refinement? Stepwise R...

Q. What is stepwise refinement? Stepwise Refinement:-Stepwise Refinement is a top-down design strategy initially proposed by Niklaus Wirth. A program is developed by consecutiv

#title.decision table, You are to create a decision table to help you decid...

You are to create a decision table to help you decide what to do for the day. If it is a weekday and it is not a holiday, then you go to work. However, if it is a weekday and it

Structured analysis model, Structured Analysis Model Structured  analy...

Structured Analysis Model Structured  analysis is the  most  broadly  used  of  requirements  modeling  techniques  relies  on flow modeling and data modeling to established t

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