Data miners at Sussex police have noticed a correlation between violent incidents and a full moon and based on this fact deploy more police on the streets of Brighton at times of peak lunar brightness. Well it makes a change from noticing that nappies (diapers) and beer goes together.
Talking of Brighton, Jon Mead writes a few notes on data warehouse healthchecks. I completely agree with his approach – it is the same as mine The article is worth a look. As Jon points out the exact steps taken in any healthcheck vary – there is such a variety of design goals and techniques in building warehouses that there can be no such thing as the universal data warehouse diagnostic script. It needs technical experience and a eye for business data analysis.
But at the end of the day we all are trying to answer these four questions
- Does the data load quickly enough
- Does the data load frequently enough
- Can the data be read quickly enough
- and, can you trust the quality of the data
Sounds simple but often needs an expert eye.