I have been using rational rose data modeler to create "logical ERD" in
object model.
Questions:
1. Can the object model display the "key" (i.e. Part of Object Identity)
field?
(I know it can be displayed in data model.)
2. I have been using Association for non-identifying relationship and
Aggregation by Value for identifying relationship. Is this correct? Does
it cover all the relationships in data model?
3. For Association relationship, I should not add "foreign key" in the
related Class because when transforming to data model, the foreign key will
be added automatically.
e.g.
INDUSTRY Class
attributes: Industry_Code (key), Industry_Title
ITEM Class
attributes: Item_Code (key), Item_Price
And one INDUSTRY maps to many ITEM; Industry_Code will be added to ITEM
class as foreign key in data model.
Also, I'd appreciate it if you have other valuable experiences about the
tool to share.
Thanks.
Yue-Hwa
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