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AllowDrillThrough Element (ASSL)

Determines whether drillthrough is permitted on the parent element.

Syntax

<MiningModel> <!-- or MiningModelPermission -->
<!-- or MiningStructurePermission -->   ...
   <AllowDrillThrough>...</AllowDrillThrough>
   ...
</MiningModel>

Element Characteristics

Characteristic

Description

Data type and length

Boolean

Default value

False

Cardinality

0-1: Optional element that can occur one time and only one time.

Element Relationships

Relationship

Element

Parent elements

MiningModel Element, MiningModelPermission, MiningStructurePermission

Child elements

None

Remarks

The elements that correspond to the parents of AllowDrillThrough in the Analysis Management Objects (AMO) object model are [T:Microsoft.AnalysisServices.MiningModel,]MiningModelPermission, and MiningStructurePermission.

Drillthrough on Mining Structures

In SQL Server 2008, you can define AllowDrillthrough permissions for mining structures as well as mining models. When you assign this permission to a role, any member of that role can query the data mining model, and return structure columns that were not included in the model. For example, you create a model that uses only these columns: customer key, customer income, and customer purchases. If you enable drillthrough on the model, users can return information in other columns of the mining structure, such as customer e-mails or names.

Therefore, to protect sensitive data, use caution when you add columns to the mining structure. Also, grant AllowDrillthrough permission on a structure only when it is required.

To drill through to structure columns, use a query with one of the following forms:

SELECT * FROM <structure>.CASES

or

SELECT StructureColumn('<structure-column-name>') FROM <model>.CASES