Entity sets - containment and parent-child

[Mark Beall]

Never mind the second question, it obviously has to be c;B

mark

On Nov 12, 2009, at 11:21 AM, 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?
>
> 2) In the documentation there is an example of the entity set  
> operations, but it doesn't describe some cases that seem to be  
> ambiguous. For example:
> - Entity set A contains abac and entity set B
> - Entity set B contains abaa
>
> What is the result of A-B? Is it c;B or just c?
>
> Thanks,
> mark
>