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ERD and Relational Model Diagram

WHat is the difference between them?
In ERD diagram it doesn;t show p.k and f.k (relationship between entity)
In ERD relationship doesn't break like many-to-many etc.

Is that only the difference between them?
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jay4
Asked:
jay4
1 Solution
 
jay4Author Commented:
Its not homewok question!
I am just asking u guys is that only diff ??? i don;t there is any hidden question that suspects u to think as homewrok question, then please let me knpw what kind of question i hv to ask here?
I am just asking is there any key diff on between them..?
regards!
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Alan WarrenCommented:
Hi jay4,

No offence intended, it seemed a bit like a multiple choice quuestion :)

found some information here may be usefull.
http://www.umsl.edu/~sauter/analysis/er/er_intro.html

Alan
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arbertCommented:
This really is a "shop" type question as well.  I've worked in many different places and it seems that each "shop" has their own definition of what an ERD is and what it contains....
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