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Snowflake schema in AS2005

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alejandro
 
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Default Snowflake schema in AS2005 - 10-23-2006 , 07:15 AM






I've upgraded to AS2005 and i'd like to know how can i create this type of
dimension.
In AS2000 this was very simple, as many other things that in AS2005 aren't.
Can someone help me?

Thanks


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Deepak Puri
 
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Default Re: Snowflake schema in AS2005 - 10-23-2006 , 12:58 PM






You can refer to the Product dimension in the Adventure Works DW AS 2005
database - its snowflake schema is also described in BOL:

http://msdn2.microsoft.com/en-us/library/ms175439.aspx
Quote:
SQL Server 2005 Books Online
Introduction to Dimensions
...
Dimension based on a Snowflake Schema Design

Frequently, a more complex structure is required because information
from multiple tables is required to define the dimension. In this
structure, called a snowflake schema, each dimension is based on
attributes from columns in multiple tables linked to each other and
ultimately to the fact table by primary key - foreign key relationships.
For example, the following diagram illustrates the tables required to
completely describe the Product dimension in the AdventureWorksDW sample
project:
...
Quote:

- Deepak

Deepak Puri
Microsoft MVP - SQL Server

*** Sent via Developersdex http://www.developersdex.com ***


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Julius Concepcion
 
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Default Re: Snowflake schema in AS2005 - 10-24-2006 , 02:41 AM



They are called "Reference" dimensions now in AS2005. A Snowflake is
implemented by relating the inner table (intermediate table) between
the fact and the outer table (reference dimension). You can also join
the snowflaked tables together inside a Named Query and treat it like a
view and build a dimension off that. Hope this helps.

alejandro wrote:
Quote:
I've upgraded to AS2005 and i'd like to know how can i create this type of
dimension.
In AS2000 this was very simple, as many other things that in AS2005 aren't.
Can someone help me?

Thanks


Reply With Quote
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