The basic (logical) concepts are sound and have been practiced as solutions (for particular cases) for an age. However I cant see that moving them to the general level would be a success.

we´ve all worked with systems where a one size fits all aproach has been used and though providing flexibility, you simply cant extract the data.

I would suggest that simply visualising the join processing required to batch load a large dimension would cause oracle a knightmare

I recognise that this is covered in the paper but I hardly think it is not acceptable to simply desire a new query engine.

Pleased to find useful reading materiel about DM Vs DWH.

I am a Quality Assurance Analyst/Tester creating QA practice for a project that involves testing ETL’s data integration in a number of iterations from staging till EDW to cubes. (Data containing financial transaction)

IT team has envisaged re-architecting the existing DM and creating a Global Data Warehouse much in the lines of Kimball agile process with SQL server 2008 technical environment.

Have created a base testing scope, approach and design that has been accepted “okay as a plan”.

Personally feel I can do better with test objectives and looking for data testing, methodologies and techniques for information.

Would remain grateful should anyone provide inputs, and kindly accept my thanks in advance.

Ramesh

Bill Inmon says:
“The Data Vault is the optimal choice for modeling the EDW in the DW 2.0 framework.”, June 2007

We’ve gotten huge responses to our classes on the Data Vault, which we teach in Denver, Colorado at: http://www.GeneseeAcademy.com, and also in the Netherlands.

I’m nearing publication of the business chapters of my book, which will be announced soon on B-Eye-Network.com

I’d love to hear from anyone that is interested, and would be happy to go through a 30 minute webex to discuss the Data Vault approach. I’ve got some large customers using it, including: Office of Naval Intelligence, US Army Medical Division, FDA, FAA, JPMorgan Chase, Cendant Timeshare Resource Group, and a host of banks around the world.

I’d love to hear from you all,
DanL@DanLinstedt.com

If your biggest concern is which DBMS to choose, you have a lot of other knowledge you need to acquire.

There are many tools to accompany a DBMS in the Business Intelligence (BI) arena. There are hundreds of vendors and some great products out there. Generally DW/BI projects are hundreds of thousands of dollars (> 100K USD) and many months. Even using a Kimball approach, it will take some time compared to the Inmon approach that could take over a year to complete all the analysis and requirements.

If you are merely looking for a repository, MySQL would be just fine, but I would guess that you want to do more than store the data.

It seems that no one is 100% Inmon or Kimball, but in either case, you must still keep in mind that there is always a big picture to construct.

Good luck in your endeavors. You are headed in the right direction by finding great blogs like this one to help in the education.

– David

Data Marts and Data Warehouses can be built on any RDBMS such as Oracle, DB2, MS-SQL, MySQL, etc. The difference is only in the way you design your database schema and tables – otherwise these are just regular databases. So you do not need to go looking for new software.

You could try reading my post Database vs. Data Warehouse to understand this better.

I’ve particularly found MySQL to be an excellent solution for large data volumes (read Data Warehousing with MySQL), but I’d suggest you stick to whatever RDBMS you and your team are competent on.

p_d_g86@yahoo.com.mx

Please, I´m working on it and I need to know wich DBMS is the best choice to develop Datawarehousing or DataMarts.

I´ll be thankful for your answer.

Cheers, from Mexico.

I’ve seen millions of dollars spent on what becomes a little more than an off-line copy of operational data, rather than a proper data warehouse.

I don’t know know if the Kimball method will work any better, but it at least is designed to be based on separate data ownership for different domains. Recognising this, the governance issue can be addressed directly. Maybe people will play better if the rules are already set.

regards

yadu