<b>Diff btw Class Diagrams and ERD's:</b>
Class diagrams and ERDs both model the structure of a system. Class diagrams
represent the dynamic aspects of a system: both the structural and behavioural features.
ERDs, depicting only structural features provide a static view of the system.
Elements of a class diagram:
>class
>association
>binary
>n-ary
>Aggregation
>Composition
>Generalization
>Dependency
>Realization
>Association Classes
Elements of Entity Relationship Diagrams:
>Entity - A data attribute is a property common to an entity.
Check this link
www.cdf.toronto.edu/~csc340h/summer/tutorials/TutorialClassERD.pdf
Regards,
Pavan.
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