>I'm learning mm.net. and was wondering if MM .NET framework has a inbuild capacity to handle Parent Child relationship from database. Has anyone used it?

Yes, it does. You can establish a parent/child relationship between two business objects, then use the hook events provided in the child class to take specific action when something changes with the parent object. For example, if you retrieve a parent object (ex, a customer), you can write code in the child's (ex., an order) HookParentNavigated method to automatically retrieve orders for that customer.

This relationship can continue for grandparent/parent/child/grandchild, etc. type of relationships, and includes hooks for many different events (a customer being added, deleted, updated, etc.).