create barcode bitmap c# Processing a Dimension in C#

Maker Quick Response Code in C# Processing a Dimension

When you process a dimension, the server creates a map that includes the path for each member of that dimension . Every cube that includes the dimension uses that map . When you process an existing dimension, the map is destroyed and a new map is created . Destroying the dimension map invalidates all the cubes that use the dimension . When you process an entire database, the dimensions are processed first and then all the cubes are processed as well . But when you process a single dimension, you make all the cubes that use that dimension inaccessible to client applications . Fortunately, you can make certain changes to a dimension without destroying the existing map . If you don t destroy the existing map, you don t invalidate existing cubes . Analysis Services allows you to update a dimension to make changes that don t destroy the dimension map . The most useful change you can then make is adding new members to a dimension . You can also rename, delete, or re-parent members . For example, you could re-parent the Helmets member by changing its category from Accessories to Clothing .

Note If a dimension member has fact data associated with it in the cube, Analysis Services can t actually delete the member permanently during a Process Update . Instead, Analysis Services will hide the member in the dimension, leaving the fact data in the cube . The associated fact data will still be included in aggregated values, but it will not be displayed alongside a member in the dimension . Unfortunately, when you update a dimension, you delete the aggregations related to that dimension . To avoid deleting aggregations when you update a dimension, you need to change the attribute relationship property RelationshipType from its default value of Flexible to Rigid . Changing this property allows you to update a dimension without deleting all of the related aggregations . However, if this property is set to Rigid and you try to update a dimension, Analysis Services will fail the operation if it detects changes in the dimension table that aren t allowed . Deleting or re-parenting members of a rigid relationship requires the dimension to be fully reprocessed, which in turn forces each cube using the dimension to be reprocessed . The Date dimension is a good candidate for rigid attribute relationships, because you should not delete dates, and the month, quarter, and year that a date belongs to shouldn t change . A product dimension with categories and subcategories may not be a good candidate for rigid attribute relationships because products may be deleted or recategorized . In the next procedure, you will learn how to change the value of the attribute relationship property RelationshipType from Flexible to Rigid .

1. Switch to BIDS . In Solution Explorer, right-click Date .dim and select View Designer . 2. In the Attributes pane of the Dimension Designer, point at the Date dimension . Design Warnings will appear, including the warning Define attribute relationships as Rigid where appropriate . You should be careful about responding to this warning . Only define attribute relationships as Rigid if you are sure that when dimension members are deleted or re-parented, you will be able to fully reprocess the dimension and all cubes that contain the dimension . 3. Switch to the Attribute Relationships tab . 4. In the Attribute Relationships pane, right-click the Date Month attribute relationship and select Edit Attribute Relationship . 5. In the Edit Attribute Relationship dialog box, change the Relationship Type to Rigid . Click OK . The Date - Month attribute relationship is now displayed with a solid arrow indicating that it is a rigid attribute relationship . 6. Repeat steps 4 and 5 for all of the other Date dimension attribute relationships . 7. Close the Dimension Designer and save the changes to the Date dimension .