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Ronald Damhof

I have been a BI/DW practitioner for more than 15 years. In the last few years, I have become increasingly annoyed - even frustrated - by the lack of (scientific) rigor in the field of data warehousing and business intelligence. It is not uncommon for the knowledge worker to be disillusioned by the promise of business intelligence and data warehousing because vendors and consulting organizations create their "own" frameworks, definitions, super-duper tools etc.

What the field needs is more connectedness (grounding and objectivity) to the scientific community. The scientific community needs to realize the importance of increasing their level of relevance to the practice of technology.

For the next few years, I have decided to attempt to build a solid bridge between science and technology practitioners. As a dissertation student at the University of Groningen in the Netherlands, I hope to discover ways to accomplish this. With this blog I hope to share some of the things I learn in my search and begin discussions on this topic within the international community.

Your feedback is important to me. Please let me know what you think. My email address is Ronald.damhof@prudenza.nl.

About the author >

Ronald Damhof is an information management practitioner with more than 15 years of international experience in the field.

His areas of focus include:

  1. Data management, including data quality, data governance and data warehousing;
  2. Enterprise architectural principles;
  3. Exploiting data to its maximum potential for decision support.
Ronald is an Information Quality Certified Professional (International Association for Information and Data Quality one of the first 20 to pass this prestigious exam), Certified Data Vault Grandmaster (only person in the world to have this level of certification), and a Certified Scrum Master. He is a strong advocate of agile and lean principles and practices (e.g., Scrum). You can reach him at +31 6 269 671 84, through his website at http://www.prudenza.nl/ or via email at ronald.damhof@prudenza.nl.

July 2007 I had a first aquaintance with Dan Linstedt - via LinkedIn. I worked for a large government organisation as the architect for Data Warehousing and Business Intelligence. I seriously considered Data Vault as the standard methodology for the Enterprise Data Warehouse. I worked for over 2 years for this govenment organisation and my choice for the Data Vault is still a very good one.

November 2007 I got Dan Linstedt to the Netherlands and got the first 27 peeps trained and certified of that same government organisation. I had dozens of discussions with architects, management, developers, etc...but in the end the consensus on choosing Data Vault was huge.

Since november 2007 Data Vault sky rocketed in the Netherlands. Together with the Genesee Academy and DNV I think we certified over 200 people and I dare to say that most new EDW projects nowadays in the Netherlands have chosen Data Vault as the prime methodology.

Before I get criticised for sanctifying one methodology despite the various (non) functional requirements; I do believe that ANY architecture needs to be in line with the business-, application- and technical architecture. So choosing one methodology on forehand is just plain wrong. There has to be sound justification and alignment for any choice in your architecture. Whether it's a tool, a methodology or whatever.

Since 2 years we (Genesee Academy, me, DNV) certified over 200 people - most of them extremely seasoned and respected experts in our field. On average these consultants are very critical on any new 'trick in the book'. I dare to say that most of the experts that were certified were convinced that Data Vault has got extreme value and potential. The proof of the pudding is in the eating; Data Vault got many implementations in the Netherlands the last two years and it's growing fast.

I am confident that Data Vault in the years to come will hit Europe as hard as it has hit the Netherlands.

But I wonder......I and am still baffled by it. The attention for Data Vault in the United States is extremely limited, why is that? Even a respected institute as TWDI is not paying much attention. Why? Experts in the field do not mention Data Vault what so ever. I just don't get it. Can anybody enlighten me?

For those of you not familiar with Data Vault --> read my articles.

Posted August 18, 2009 9:00 AM
Permalink | 1 Comment |

1 Comment

In 2004 Dave Wells (Director of Education, TDWI) mentioned in an article that Dan Linstedt and colleagues offer breakthrough thinking for essential history with the data vault. As it seems however there was little follow up.

My assumption is that it has to do with the requirements on historical data.
The data vault is like a time machine.
We can travel back to any date in time and get the data exactly as it was on that date.
Without the data vault this is almost impossible because for instance part of the data will already be overwritten.

My questions/points of discussion are:
- Are the requirements in the Netherlands on historical data different than in the USA?
- Should we also use the data vault when the requirements on history are less strict?
- Does anyone know other solutions for the time machine functionality which for instance are being used in the USA?

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