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Comparing Oracle 11g OLAP Option and SSAS
For my next DWBI project, I’m thinking about implementing Oracle 11g OLAP option instead of SSAS, so I’m comparing them. Browsability: users can use OBI (e.g. Answers), BO (since 9i AW/2003), Excel or...
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Who Are Using The Cubes Now?
To find out who are accessing the cubes right now, there are several ways: Query the SSAS query log table Use Activity Viewer application Query the Discover_Connection DMV (or the schema rowset XMLA)...
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Q&A on: Impersonation
Q: What’s the difference between impersonation and connection string? A: Let’s assume that the source database is in Oracle, running on UNIX. In BIDS, in the data source we have Connection String and...
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SSAS DMV: Join using DataSet
In SSAS 2008 we have Dynamic Management View (DMV), which is basically XMLA discover command, wrapped as data mining select statement (DMX). On SSMS, if we connect to an SSAS instance, right click on...
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Parent Child Dimension: extra child node
In a Parent Child Dimension (PDC), using the MembersWithData property we can see whether we want to display child nodes with the same parent name or not. For example, if we have a table like this: We...
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Ragged Hierarchy in SSAS
Someone asked me how to do a ragged hierarchy in SSAS. I thought it was “natural” in SSAS, i.e. using a “parent column” in the table then make that column a “parent attribute” in a “parent child”...
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Processing ROLAP Cube and ROLAP Dimension
Someone asked me today: he created a ROLAP cube with MOLAP dimension. He made some changes to the dim and did a process full on the cube. He expected to see the changes but he couldn’t see the changes...
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Tomislav’s MDX Book
I met Tomislav Piasevoli for the first time in Manchester in 2009 at SQLBits conference. I attended at his Advanced MDX session and said to him afterwards that his MDX skill was one of the highest in...
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Duplicate Attribute Keys in SSAS
Sometimes when we process the cube we get an error message: duplicate attribute key. And at other times we get: missing attribute key. In this article I will try to address these 2 issues. A. Duplicate...
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Where To Put an Attribute (SSAS)
Suppose you have a cube and you need to add an attribute to the cube. Say that the cube structure is: 1 MG containing 1 measure, and 1 dim containing 1 attribute. The physical table structure is: MG1...
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