olap

Is there an ORM-analogue for querying OLAP cubes / data-warehouses? I'm specifically interested in the .NET world, but generally interested in anything ;-) I've started an open source project, Kona, to wrap the ADOMD.Net lib, and try to bring ADOMD.Net into the 21st Century. You can get it up at http://www.codeplex.com/kona , but it does need some more love and attention. The task of converting lambdas to MDX isn't a small one, so I haven't even tried to to that, yet. I've tried to encourage MSFT to write a LINQ to MDX provider, but considering how few .Net developers are actually trying to

I'm wondering if there is any desktop OLAP solution that can use SQL Express (and therefore does not require Analysis Services) I've been tasked with finding a way to allow our customers to do 'Ad-Hoc' reports, but the vast majority of them are on Sql Express, In previous jobs, customers have had Analysis Services and typically Cognos or Crystal Reports, so all that was required was to design the cube. JumpingJezza SQL Express is pretty limited, I don't know of any OLAP capabilities. Although, we use DevExpress OLAP Pivot Grid with ROLAP to get around this problem. Just create a cube-like SQL

I am working on a script which selects only the needed slicer items. I tried using .SlicerItems.Selected = True / False for selecting and deselecting but I am using an OLAP data source in which case .Selected is read-only. The slicer items are in the format of YYYYWW so 7th week of 2018 would be 201807. I recorded a macro selecting some slicer items and this is what it gave me: Sub Macro2() ActiveWorkbook.SlicerCaches("Slicer_YYYYWW").VisibleSlicerItemsList = Array( _ "[Results].[YYYYWW].&[201726]", "[Results].[YYYYWW].&[201727]", _ "[Results].[YYYYWW].&[201728]", "[Results].[YYYYWW].&[201729]

Hi I have following data Function SB `Country Region` `+1 Function` `+1 SB` `+1 Country Region` <chr> <chr> <chr> <chr> <chr> <chr> 1 ENG SB10 AMER ENG SB10 AMER 2 IT SB07 EMEA IT SB07 EMEA 3 QLT SB05 EMEA QLT SB05 EMEA 4 MFG SB07 EMEA MFG SB07 EMEA 5 MFG SB04 EMEA MFG SB05 EMEA 6 SCM SB08 EMEA SCM SB08 EMEA i want to create 3 dimensional OLAP cube in which column Function SB Country Region should be in row and +1 Function , +1 SB , +1 Country Region should be in column . output should be of following format `+1 Function` `+1 SB` `+1 Country Region` Function SB Country Region thank you Adding

Hey, i am starting a hadoop based hypercube with a flexible number of dimensions. Does anybody know any existing approaches for this? I just found PigOLAPSketch , but there is no code to use it. Another approach is Zohmg from lastfm, which uses hbase, but seems to be very dead. I think i will start a pig solution, maybe you have some advices? This would be very cool/useful. OpenTSDB is an HBase time-series database that might be interesting to look at, they have a clever approach to secondary indexing. You can also look at gpu based database https://www.kinetica.com/ but this is not open

I'm just starting to get my head around MDX and I'm having trouble with a calculated member. I'm using the following MDX: IIF( ISEMPTY((Axis(1).Item(0).Item(0).Dimension.CurrentMember, [Measures].[Qty])) ,NULL ,([Product].[Product Code].CurrentMember.Parent, [Measures].[Qty]) ) What I'm trying to do is get a total quantity of the group of products displayed in a cube. I then use that total to divide by each product's quantity to get a "percent of total" measure. The above MDX does correctly return the total quantity of products displayed in any dimension. However, when a user in Excel changes

In one local financial institution I was rebuked by their programmers for expressing them my opinion that (their programmers' obsession with) (b)locking issues in their MS SQL Server 2005 OLAP (SSAS) database(s) did not make much sense to me. (The OLTP databases are SQL Server, Oracle and non-RDBMS ERP). What are locking issues in OLAP processing if OLAP (SSAS) databases are used only for reading (read-only after deployment)? In which context do such (an whic?) issues arise - during SSIS processing and transfer of data from OLTP databases? during deployment of SSAS (OLAP) databases to SSAS?

I'm doing a little bit of planning of an application that uses Mondrian OLAP engine with Olap4j and should present/display data to user. I understand all the back-end stuff, but I'm not sure how should I display the data in the view layer. For example olap4j has a formatter that prints the SELECT nicely into the console. How is the data that I get from olap4j displayed in view layer ? I just went through the olap4j API, and there doesn't seem to be anything for getting the result in a form that can be somehow further processed and displayed. Is this process part of the Pentaho solution ? So