Creating local cubes from relational sources using XMLA
As a follow-up to my recent post on creating local cubes from server cubes with XMLA, I’ve just been asked on the newsgroup about options for creating local cubes direct from relational sources without going via a server cube. Since you can’t use the CREATE GLOBAL CUBE syntax to do this, you’ve got two options: use the old CREATE CUBE syntax (which is very unpleasant and, I believe, only creates ‘AS2K’ local cubes and not the new-improved ‘AS2005′ local cubes which seem to perform so well and have all the cool new features) or use XMLA – which seems to be the best choice by default. Here are the steps to get the XMLA needed to create your local cube:
- Design a server database/cube (not using any features like partitions or distinct count, which aren’t supported in local cubes) in BIDS. Deploy it but don’t process it.
- In SSMS script the database you’ve just created to a new query editor window.
- Still in SSMS, right-click on the database again and select Process, select ‘Process Full’ then instead of clicking OK click the Script button and choose to script to a new query editor window.
- You now have the two XMLA commands you need to create and process your local cube, you just need to combine them into one. Select all of the Create statement generated when you scripted the database and paste it into the Batch statement generated from the Process dialog, immediately after the first line (containing the ‘Batch’ command) and before the XMLA that actually does the processing.
- Copy the new statement, open up MDX Sample app, connect to the path of the new local cube file, paste the statement into MDX Sample app and then run it. And voila, your local cube will be built direct from the relational data source.