Extend cubes [AX 2012]

you can customize the prebuilt analysis project relatively easily by using the SQL Server Analysis Services Project Wizard. But in some cases, you may want to make
deeper customizations. For example, you might want to:
■ Create a rich hierarchy, such as a parent/child hierarchy to model organizational units.
■ Add new KPIs.
■ Bring external data into the analysis project and create a custom dimension.
You can use Business Intelligence Development Studio to make these types of changes.

Because the prebuilt BI components are included in the AOT as an SSAS project, you can modify the project. To modify the prebuilt Analysis Services project, do the following:
1. In the AOT, expand the Visual Studio\Analysis Services Projects node.
2. Right-click the project that you want to modify, and then click Edit.
An Infolog message appears, stating that a copy of the SSAS project has been created and saved, as shown in Figure below


If SQL Server Business Intelligence Studio is installed, it will start and open the copy of the project.
Changes that you make to the project are not automatically saved to the AOT. You need to save the project and import it back into the AOT.

The DSV contains the table and view definitions that are used by analytic artifacts. Notice that the OLAP framework has implemented several query definition patterns in the DSV:
■ Financial dimensions that the wizard has added appear as custom query definitions in the DSV.
■ The OLAP framework has created query definitions corresponding to Microsoft Dynamics AX views.
■ The OLAP framework has added a reference relationship to resolve virtual companies, if your Microsoft Dynamics AX installation has virtual company definitions.
■ The OLAP framework has created views that make Microsoft Dynamics AX enumerations accessible

in all of the languages that have been added to the project.
Avoid modifying any of the framework-generated objects in the DSV. Any changes that you make to these objects are overwritten without warning the next time you update the project.
You may add your own objects to the DSV (for example, new query definitions. The Project Update  option will preserve these objects.
In Microsoft Dynamics AX 2012 R2, do not implement any partition-specific logic in any of the query definitions. Otherwise, when the project is deployed to multiple partitions, the system may
generate processing errors. (Because the framework adds partition-specific logic to the DSV at deployment time, it may not apply the changes accurately to your query definitions.)

Data source
A data source has been created that points to the Microsoft Dynamics AX OLTP database.

Dimensions, measures, and measure groups

In Figure below , notice the dimensions that are included with the Microsoft Dynamics AX 2012 prebuilt BI solution, as well as the measures and measure groups.
For a list of measures and dimensions, see “Cube and KPI reference for Microsoft Dynamics AX 2012” at http://msdn.microsoft.com/en-us/library/hh781074.aspx.

KPIs and calculations
The SSAS project contains prebuilt KPIs and calculations. Microsoft Dynamics AX 2012 does not provide the capability to model KPIs and calculations in the AOT. You can modify these definitions or
add new ones directly in Business Intelligence Development Studio.

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