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Modeling Header & Details
A common question I hear is about how to model & configure a Header-Detail scenario. By saying header-details, we are referring to a transaction that is split over more than one granularity. This...
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Approaches to Building BI Applications and Data Warehouses
Original Post date 2/27/09 I’d like to comment a bit on the differences between BI and Data Warehousing as I believe they are commonly confused and used interchangeably. Having just come from a...
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Webinar on Performance, June 7th, 1pm EST
I’ll be doing a webinar called Planning for High Performance OBI. I’ve given this preso a few times before, but it’ll be good to do it on the web for a change. I discuss some of the basics you should...
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Performance Tuning and Financial Analytics
In the past I’ve written and presented on OBI performance from the ‘before perspective’: before you begin development, what are the things you should plan on and how should you implement them. This...
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Degenerate Dimensions and Aggregates
An interesting topic came up recently on my latest project that I think is quite informative on how OBI works under the hood. It involves how to model degenerate dimensional fields into OBI when there...
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Build a Performance Layer to Make the BI Apps Fly
The BI Apps from Oracle present customers with a nice head start to getting their BI environment up and running. Financial Analytics, HR Analytics, Supply Chain Analytics, etc. all come pre built with...
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Keep It Simple Stupid
I’ve been spending a lot of time recently working on performance tuning projects. Sometimes the BI apps are slow, sometimes it’s custom, sometimes it’s a mix. I’ve gotten the chance to see what works...
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OBI’s Nested Aggregation > Ralph Kimball
Ok so I put a provocative title on this post for a reason. This post will explore why some of Kimball’s concepts may be out dated when newer query generation or database capabilities are taken into...
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BI Apps / Performance Layer Preso
This is my presentation from last week’s Rittman-Mead BI Forum in Atlanta. Incidentally it happens to be the same topic (similar slides) to the KPI Partners webinar from April and what I gave in...
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Build Your Own Time Hierarchy
Every single BI system has a time/date/period/calendar hierarchy in it. If you use the BI Apps, it actually comes with 2 different tables for this purpose alone, along with a ton of OOB capability....
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