I have following queries about relationships in MS-CRM
1) It is said when 1:N relationship is created between system entity and custom entity it is called as parental relationship and if 1 to N relationship is created between Custom entity and System entity it is called as referential relationship. My quesiton is what difference the concept of parental and referential relationship make in terms of functionality
2) There are certain unsupported entity relationships they are 1 to Many customer and 1 to 1 and any to any. It is said Only Opportunity or case has to be associated with accounts or contacts. Is it not possible to associate any other custom enities to account or contact using relationship i am not clear in this point
3) What is cascade userowned behaviour?
Could any of you anwer these queries