(ROSE) Associations maps to Relationships-Data modelling

[Martin Paul]

Hi all,         if  ADDRESS AND PARENT ARE dentifying relationships since child instance can't exist without parent. IF CLINIC AND SERVICE are non-identifying since they are independent entites and  have no strong dependence.Fine.   How about 1:1 relationship between ITEM and ITEMPICTURE  is this identifying or non?? How about 1:N relationship between ITEM and ORDERED ITEM how do you justify these are NON-identifying?? Please provide me with a few concrete example of mapping all kinds of relationships while mapping an object model to data model....   Thanks in advance Martin Paul