What is the difference between weak entity set & strong entity set ?

 Posted by Bharathi Cherukuri on 4/30/2012 | Category: Sql Server Interview questions | Views: 14917 | Points: 40

Weak Entity Set:
An entity set which does not possess sufficient attributes to form a primary key is known as a weak entity set.
Specific Person,Company,Event,Plant

Strong Entity Set:
An entity set which does have a primary key is called a strong entity set.
Set of all Persons,Companies,Trees,Holidays

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