Many-to-many relationship, Database Management System

Assignment Help:

Many-to-many: Entities in A and B are related with any number of entities from each other.

Example:

Taught_by Relationship among course and faculty.

One faculty member can be assigned to teach a lot of courses and one course may be taught by a lot of faculty members.

528_Many-to-many Relationship.png

Relationship among book and author.

One author can explained a lot of books and one book can be written by more than one authors.

1298_Many-to-many Relationship1.png

More about Relationships and Entities

Related Discussions:- Many-to-many relationship

Farm management system, draw er diagram using entities crop,employee,depart...

draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer

Private Tuition, Hi, Do you offer private tuition for DBMS?

Hi, Do you offer private tuition for DBMS?

List the reg-no of vehicles owned in relational algebra, Given the followin...

Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following

Types of attributes, Attributes attached to an entity can be of various typ...

Attributes attached to an entity can be of various types. Simple The attribute that cannot be further separated into smaller parts and shows the basic meaning is known as a

Advantages of Observation Methods, Advantages of Observation Methods: ...

Advantages of Observation Methods: Bailey has pointed out four advantages of observation: 1. Superior in Data Collection on Non Verbal Behavior: When a person a opi

Cube building in dataware housing , 1) Define a job scheduling strategy tha...

1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict

Explain clustering file organization, Explain Clustering file organization ...

Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that

Locking, define locking in simple language and decribed it

define locking in simple language and decribed it

What are the authentication modes in sql server, What are the authenticatio...

What are the authentication modes in SQL Server? How can it be changed? Windows mode and Mixed Mode - SQL and Windows. To alter authentication mode in SQL Server click Start, P

What is normalization, What is normalization? It is a method of analysi...

What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages