What is the fundamental difference between AssociationRef and ChildAssociationRef?

[vmalygin]

Are there any fundamental (technical) difference between association and child association?

I know that they are stored in different tables in db. 

Are there any species of using association or child association in some cases?

Maybe there are some performance difference?

Maybe they are identical from technical point of view?

[cesarista]

Maybe this link helps:

Working With Custom Content Types in Alfresco | ECMArchitect | Alfresco Developer Tutorials 

Regards.

--C.