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Queries on Relationships in MS-CRM

Posted on 2010-11-26
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Hi,

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
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Question by:PrasadSKLN
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Feridun Kadir earned 500 total points
ID: 34216382
In a 1:many relationship there are cascading rules which define what happens to child records when an action is taken on the parent record. For example, an account can have many contacts. If an account is deleted what should happen to the contacts? This is called the cascading behaviour.   For each of the possible actions, there is an option as to what should happen. For example, for the delete action you can choose cacade all which means that all contacts linked to the account will be deleted. Or you could choose Cascade User Owned, which means that if the account is deleted, only the contacts owned by the user is deleting the account will be deleted.

There are pre-defined definitions of cascading behaviour. One is parental which sets all the cascade actions to All - so if an account is deleted then all contacts are deleted. Another one is referential which means if an account is deleted, don't delete the contacts but remove the link in Parent Customer to the account (which has been deleted).

When you create a relationship you can define whether the relationship behaviour is parental, referential or configurable. There are some restrictions in that if you create a 1:many relationship between a system and a custom entity then the behaviour cannot be parental.

With regard to the customer entity , this is a special virtual entity where when a users chooses a parent customer they can choose either an account or contact as the parent customer. You can't create relationships that offer this choice.

Opportunities and cases can have custom entities linked to them.

Hope this answers your questions.
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