Forum : What is the difference between weak entity and sub type?
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What is the difference between weak entity and sub type?

Hi,

What is the difference between weak entity and sub type
Asked by Balu Prasad | Nov 23, 2009 |  Reply now
Replies (1)
View teacher siliconindia 's Profile
Hi balu,

Weak entity means- existence depends on existence of another entity (example:Employee:Dependant)
SubType related to a SuperType with unique attributes - Specialization Subtypes are said to Inherit characteristics from its SuperType.
Nov 23, 2009

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