Global Dimensions
Global dimensions is a feature which makes it possible to link else unrelated hierarchies (Different connection/cube) – provided the hierarchies unique names are identical.
When using a criteria on one of the hierarchies in a Global dimension, the criteria is also applied to the other hierarchies in the Global dimension.
Unique names in Analysis Services are prefixed with [Dimension].[Hierarchy], meaning that a unique name belonging to a dimension with the name ‘Period’ cannot immediately be applied in another cube where the dimension is named ‘Posting period’, but the system is made in such a way that the prefix is exchanged before the query reaches Analysis Services.
At present there is no UI for configuring Global dimensions. It all happens in an XML-file: ProgramData\TARGIT\ANTserver\Settings\GlobalDimensions\GlobalDimensions.xml.This is an example of the GlobalDimensions
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| language | xml |
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| title | GlobalDimension.xml sample file |
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<?xml version="1.0" encoding="utf-8"?> |
<globalDimensions>
<globalDimension
<globalDimensions>
<globalDimension id="time_hierarchy"> |
<metadata database="DemoData" cube="Sales" dimension="Period" hierarchy="Period" /> |
<metadata database="Casual" cube="Clothing" dimension="Posting Period" hierarchy="Hierarchy" /> |
<globalDimension id="time_month"> |
<metadata database="DemoData" cube="Sales" dimension="Period" hierarchy="Month" /> |
<metadata database="Casual" cube="Clothing" dimension="Posting Period" hierarchy="Month" /> |
The id attribute is not displayed, but must be unique. The hierarchies to be linked must be written in the same element.
In the example Period->Period from Sales cube in DemoData database is linked to Posting Period->Hierarchy from in Clothing cube in CasualClothing Casual database (id=”time_hierarchy”). This also Similar happens with the Month hierarchies (id=”time_month”).
The globalDimension id attribute is not displayed, but must be unique within all the global dimensions . The hierarchies to be linked must be written in the same globalDimension element.
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