Work Item Category tables
You can query for categories of work items by using the FactWorkItemToCategory and DimWorkItemCategory tables. You can organize the results of other work item queries by category if you join these tables with the DimWorkItem by using FactWorkItemToCategory.WorkItemTypeName = DimWorkItem.System_WorkItemType.
For information about the measures and dimensions that are associated with these tables in the SQL Server Analysis Services cube, see Analyze and report on work items and test case data using the Work Item perspective.
FactWorkItemToCategory is associated with the following dimension tables: