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Class diagrams and ERD

 
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 Class diagrams and ERD 
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indkal
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Joined: 16 Feb 2008
Posts: 9
Location: USA
PostPosted: Mon Nov 10, 2008 2:37 pm    Post subject: Class diagrams and ERD Reply with quote
It seems like class diagrams in UML methodology are very similar to ERDs except for the methods. However tying of methods with data in a class structure is reminiscence of one of the major problems in the pre-database era pertaining to application/data dependency. Also it runs counter to the independence of process from data. Given the popularity of UML, are we putting the clock back or maybe I am missing something. Any thoughts??
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 Re: Class diagrams and ERD 
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alf-admin
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Joined: 07 Nov 2007
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PostPosted: Mon Nov 10, 2008 11:47 pm    Post subject: Re: Class diagrams and ERD Reply with quote
indkal wrote:
Given the popularity of UML, are we putting the clock back or maybe I am missing something. Any thoughts??


On the contrary: you are spotting something: What is a class?

And yes, time has been pushed back; I'll agree with you on that.
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 Re: Class diagrams and ERD 
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indkal
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Joined: 16 Feb 2008
Posts: 9
Location: USA
PostPosted: Tue Nov 11, 2008 3:23 am    Post subject: Re: Class diagrams and ERD Reply with quote
alf-admin wrote:
indkal wrote:
Given the popularity of UML, are we putting the clock back or maybe I am missing something. Any thoughts??


On the contrary: you are spotting something: What is a class?

And yes, time has been pushed back; I'll agree with you on that.


Class is similar to the entity structure. It seems like the object behavior (methods) associated with the class structure is encapsulation of process + data in the process-oriented approach of the past. Does UML support three-level database framework?
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