CRM 2011: Accessing hidden mappings opportunity/quote/order/invoice

declare @maPID AS NVARCHAR(50)
declare @maPORT as int ; set @maPORT = 5555
-- -------------------------------------------------------
SET @maPID = (SELECT EntityMapId FROM EntityMapBase
WHERE TargetEntityName='quotedetail' AND SourceEntityName='opportunityproduct')

print 'http://' + @@Servername + ':' + 
 cast(@maPORT as nvarchar(30)) + '/Tools/SystemCustomization/Relationships/Mappings/mappingList.aspx?mappingId=' + @mapid
-- -------------------------------------------------------
SET @maPID = (SELECT EntityMapId FROM EntityMapBase
WHERE TargetEntityName='salesorderdetail' AND SourceEntityName='quotedetail')

print 'http://' + @@Servername + ':' + 
 cast(@maPORT as nvarchar(30)) + '/Tools/SystemCustomization/Relationships/Mappings/mappingList.aspx?mappingId=' + @mapid
-- -------------------------------------------------------
SET @maPID = (SELECT EntityMapId FROM EntityMapBase
WHERE TargetEntityName='invoicedetail' AND SourceEntityName='salesorderdetail')

print 'http://' + @@Servername + ':' + 
 cast(@maPORT as nvarchar(30)) + '/Tools/SystemCustomization/Relationships/Mappings/mappingList.aspx?mappingId=' + @mapid