I think you need to have a good understanding of relational theory, and a good understanding of why it doesnt work that way in the real world. But what is needed is a good college level English understanding, I don't really think it is necessary to be able to do the math as it were. In fact, a large number of DBA's (like me, for example) graduated from college before relational database theory was commonly taught. I had math through differential equations, along with physics and EE, but I never even had a chance to take a relational database theory course. On Fri, Sep 12, 2008 at 7:46 AM, Wolfgang Breitling <breitliw@xxxxxxxxxxxxx>wrote: > Niall, > > can you tell me again how memory works. I keep forgetting > > At 06:29 AM 9/12/2008, Niall Litchfield wrote: > >> I didn't say, but probably should have, given that many of the people >> involved in the IT world these days don't seem to know >> >> * how a cpu works >> * how a disk works >> * how raid works >> * how memory works >> * how a network works >> > > Regards > > Wolfgang Breitling > Centrex Consulting Corporation > www.centrexcc.com > -- > http://www.freelists.org/webpage/oracle-l > > > -- Andrew W. Kerber 'If at first you dont succeed, dont take up skydiving.'