This is the first of a two-part article that will provide an introduction to relational databases and the SQL language. This first part describes some of the key elements of the technology with an emphasis on database normalization. The second part will d
The power of connections: if you know my favorites sites and favorite people, you can build a heat map of my web, and predict the things I'm most likely to respond to with real attention. But this requires a web that's a relational database, and not a col