Author Archives: Lowes Shopper

Codd’s Rule 9: Logical data independence: Changes to the logical level (tables, columns, rows, and so on) must not require a change to an application based on the structure. Logical data independence is more difficult to achieve than physical data … Continue reading →

If you manage a lot of Oracle, M$SQL, or DB2 – you need to check out Confio. Its an agent-less performance trending tool that will make you’re life much easier.  It tracks every SQL run by user/client machine/sql statement/etc and … Continue reading →

Should you really trust a data integration team who spends 30 minutes arguing that they SHOULDN’T include all source system customer attribute data in MDM?

Learn from history or you’ll be doomed to repeat it.

My name is DataG and I’m a data modeler.  It’s been 6 weeks since my last star-schema. Lets face it.  Codd, Imhoff, Inmon, and Kimball paved the way for almost every data analyst and app-dev professional since the relational model … Continue reading →

I was using HMC 1.0 to install and configure a hadoop test cluster.  I wanted to make some changes to /usr/lib/hadoop/conf because the property that I needed to change is not exposed via Manage Services Map Reduce in HMC.  I tried … Continue reading →