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SQL Server 2000 General discussion of Microsoft SQL Server -- for topics that don't fit in one of the more specific SQL Server forums. version 2000 only. There's a new forum for SQL Server 2005.
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Old November 24th, 2005, 11:53 AM
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Default Question about Logical database design in ERwin

Hi Experts. I am beginner data modeler . The tool that i start working is called Erwin 3.5.2 . I have some questions about converting simple business case to ERD in Erwin and then converting it to physical structure. The problem that i have is what method should i follow to get the proper ERD entities to the point where they are ready to convert them to physical structure.As an example i will post a simple business case later that i want to convert to ERD and then to physical structure.

i read about Normalization method that u put all attributes in one table and start normalizing it to 1th,2th and 3th normal forms. But i heared that Normalization method is an old(25 years old) method and it is not a proper way to design logical data model.

Now i want to know how and what is best method i need to use to reach to point where my entities are ready for creating physical structure. Obviously free of redundant and duplicated data. I would be really happy if an expert guide me and refer me to some simple,good tutorials.Thanks
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Old November 24th, 2005, 12:17 PM
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A book was published a few years ago called "Data Modeling with ERwin" published by Sams which was rated pretty well. That would be a good place to start. From there you could read the book "Beginning Relational Data Modeling" published by APress.

Scott

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Old November 24th, 2005, 12:30 PM
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Quote:
quote:Originally posted by SQLScott
 A book was published a few years ago called "Data Modeling with ERwin" published by Sams which was rated pretty well. That would be a good place to start. From there you could read the book "Beginning Relational Data Modeling" published by APress.

Scott

Thank u for u reply . you mentioned Beginning Relational Data Modeling . could u tell me if that book is using Erwin to model ?Furtheremore, untill is there any online material so that i can read before i order the books u mentioned? I could not find detailed description of the second book online !!Thanks
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Old November 24th, 2005, 12:38 PM
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"Data Modeling with ERwin"
http://www.amazon.com/gp/product/067...books&v=glance

"Beginning Relational Data Modeling"
http://www.amazon.com/gp/product/159...books&v=glance

I don't think the "Beginning" book uses ERwin, but even if it doesn't, it will give you a good foundation regarding normal forms and normalization.

Scott

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