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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 25th, 2005, 01:29 AM
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Default Best method to create ERD for a bussines case?

Hi experts. i am beginer data modler and i wonder what is best method to create an ERD entities for a simple bussiness case so that i be able to convert it to physical structure. Could an expert tell me what steps should i follow to create the proper ERD entites?Thanks

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Old November 25th, 2005, 08:42 AM
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Use MS Visio Pro, and then export to SQL. This will create the database for you.

Do you need info on actually designing the database?



mmcdonal
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Old November 25th, 2005, 09:42 AM
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Create the ERD right in SQL Server (under the diagrams node). It will allow you create the ERD and then when you are ready, save the ERD and create the physical structure.

Scott

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Old November 26th, 2005, 03:35 AM
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Quote:
quote:Originally posted by mmcdonal
 Use MS Visio Pro, and then export to SQL. This will create the database for you.

Do you need info on actually designing the database?



mmcdonal
Thanks for reply. Well i have the tools to make the ERD such as Erwin and powerdesigner but the problem i have is with database design !! well i am talking about cases where u see a simple bussiness case such as teniss club and u want to create ERD for it and then convert it to datbase structure. I am just looking for a guide line on how to convert a bussines case to ERd . For example what attributes go with what entity ? and then what relationship i put between them ? I be happy if an expert point me to a proper guide line that i need to follow to make ERD out of a bussiness case .Thanks

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Old March 28th, 2008, 06:50 PM
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Hi. I guess you mean how to find entities, their relationships, "cardinalities", etc. Well, considering you are a "beginer" i suggest you back to basis. The Code texts can help you. There are another issues that are not in the books, for instance how to model business rules within in ERD. May be if you are moore explicit about your issues, i can help you.

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Old March 28th, 2008, 07:18 PM
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Quote:
quote:Originally posted by method
 
Quote:
quote:Originally posted by mmcdonal
Quote:
 Use MS Visio Pro, and then export to SQL. This will create the database for you.

Do you need info on actually designing the database?

mmcdonal
Thanks for reply. Well i have the tools to make the ERD such as Erwin and powerdesigner but the problem i have is with database design !! well i am talking about cases where u see a simple bussiness case such as teniss club and u want to create ERD for it and then convert it to datbase structure. I am just looking for a guide line on how to convert a bussines case to ERd . For example what attributes go with what entity ? and then what relationship i put between them ? I be happy if an expert point me to a proper guide line that i need to follow to make ERD out of a bussiness case .Thanks
That really has nothing to do with "Data Modeling". That's "Systems Analysis" and that where you would define the "Business Requirements" that the data model would eventually have to support. It makes no sense to even think about Data Modeling before you have the Business Requirements down on paper.

--Jeff Moden
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