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why conceptual model ? RRS feed

  • Question

  • I have one doubt, why do we need conceptual model at all although we have logical model ? cannot we work with logical model straight a way ?

    Please provide Strong Arguments in support of your answers...

    Looking to forward for some answers...

     

     

    Tuesday, October 11, 2011 7:34 AM

Answers

  • Hi

    Conceptual Model is what your Model in Model designer where as StoreModel is what your model in database, As far as I understand There is always a descrepency between our entity model and datbase table...simple example is 

    I have a table called Student with fields

    leg_StudentId,

    leg_StudentName

    So, When i create model from database will I be ok having properties like  Leg_StudentId and Leg_StudentnName? no right?

    So I will have Entity Student with properties

    StudentId

    StudentName

    This names will be represent Conceptual model and EF manages mapping between these conceptual and store model in ssl (C- S model)

     

    Hope this helps you.... 


    If this post answers your question, please click "Mark As Answer". If this post is helpful please click "Mark as Helpful".
    Tuesday, October 11, 2011 10:52 AM

All replies

  • Hi

    Conceptual Model is what your Model in Model designer where as StoreModel is what your model in database, As far as I understand There is always a descrepency between our entity model and datbase table...simple example is 

    I have a table called Student with fields

    leg_StudentId,

    leg_StudentName

    So, When i create model from database will I be ok having properties like  Leg_StudentId and Leg_StudentnName? no right?

    So I will have Entity Student with properties

    StudentId

    StudentName

    This names will be represent Conceptual model and EF manages mapping between these conceptual and store model in ssl (C- S model)

     

    Hope this helps you.... 


    If this post answers your question, please click "Mark As Answer". If this post is helpful please click "Mark as Helpful".
    Tuesday, October 11, 2011 10:52 AM
  • why do we need a descrepency between entity model & database table ?

    what are the disadvantages of direct using the logical layer ?

    Tuesday, October 11, 2011 10:58 AM
  • Hi,

    I think this blog is help: http://blogs.msdn.com/b/adonet/archive/2006/09/13/752865.aspx which introduces the mapping structure.

    Have a nice day.

     


    Alan Chen[MSFT]
    MSDN Community Support | Feedback to us
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    Please remember to mark the replies as answers if they help and unmark them if they provide no help.

    Sunday, October 16, 2011 12:26 PM