Entity sets - containment and parent-child

[Mark Beall]

So the only substantial difference between the containment and parent- 
child relationship is that I can ask for the parents of an entity set  
in a parent-child relationship whereas I can't in a containment  
relationship (although the ability to do that would be easy enough to  
add). In the containment relationship, the contained sets do play a  
part in the entity set operations, but it would be trivial to ignore  
them in the results.

Am I missing something here?

mark


On Nov 12, 2009, at 11:29 AM, Jason Kraftcheck wrote:

> Mark Beall wrote:
>> Entity sets can contain other entity sets, there can also be
>> parent-child relations between entity sets. A couple questions on  
>> these
>> concepts:
>>
>> 1) Does the parent-child relationship affect any of the operations on
>> entity sets? For example, let's say I have a set A that has  
>> children B
>> and C. If I get the entities in A is that just the entities in A or  
>> is
>> it also the entities in B and C?
>>
>
> The former.  The operation is applied only to the contents of the  
> indicated set.
>