Re: How to identify if a concept should be represented as a entity or as a value obj

Entities have a life-cycle of their own while the life-cycle of VOs is set
by their use.
That means that entities can identified independently and accessed by
unknown applications.
http://caminao.wordpress.com/how-to-represent-objects-and-activities/identities-2/identities/
Remy.
On 25 February 2013 06:46, sudarshan89 <[email protected]> wrote:

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> I am trying to find out what question one must ask during the modelling
> process to detect if a concept should be modeled as a entity or as a value
> object.
>
> My current understanding is the below
>
> If in our domain a car engine can be swapped out and put in another car
> then it has existence of its own (Aggregation) and hence cannot be a Value
> Object ... However in our domain if the engine cannot be swapped out and
> hence makes no sense without a car then it can be modeled as a Value Object
> (Composition). Does this make any sense ?
>
> Please let me know what you think
>
> Thanks
>
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