When databases are designed, they serve as semantic expressions of the organizations that employ them. Those expressions describe the data items of importance and articulate the business rules as the ...

One of the trickiest aspects of relational database management can be dealing with missing information. The standard method of representing missing information is to set the “value” to null. A null ...

I have a slightly unusual surname. It's no biggie, just something I have to go over a few times with every customer service representative I've ever spoken to over the phone. No, not Edson, Edsert, or ...