Entities, Database Management System

Assignment Help:

Entities

Let us first be aware of the question:

What are entities?

  • An entity is an object of concern used to show the things in the actual world, e.g., table, car, book, etc.
  • An entity need not be a physical entity, it can also show a concept in actual world, e.g., loan, project etc.
  • It shows a class of things, not any single instance, e.g., 'STUDENT' entity has instances of 'Mohan' and 'Ramesh'.

 


Related Discussions:- Entities

Explain the two types of participation constraint., Explain the two types o...

Explain the two types of participation constraint. 1. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i

What are called multilevel indices, What are called multilevel indices? ...

What are called multilevel indices? Indices with two or more levels are known as multilevel indices.

Query by example, Illustrate how you can use QBE to perform logical AND and...

Illustrate how you can use QBE to perform logical AND and OR operation

Accessing information permissions users, Accessing information about permis...

Accessing information about permissions to all users- Object level permissions: With the use of data dictionary you can see the permissions to user. Let us get the table name fro

Determine advantages of merging an association into a class, What are the a...

What are the advantages and disadvantages of merging an association into a class?  Advantages: i)  Less number of tables ii) Faster performance due to the fewer tables

Information infrasctructure., what factors might influence a company to out...

what factors might influence a company to outsource its IT infrascture.

Oracle SQL Developer, Introductory course and so does not require any fancy...

Introductory course and so does not require any fancy coding. I will provide a guidance document to help you in producing the solutions.

What is a linked server, What is a Linked Server? Linked Servers is a m...

What is a Linked Server? Linked Servers is a method in SQL Server by which we can add other SQL Server to a Group and query both the SQL Server dbs using T-SQL Statements. With

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