Monday, November 26, 2007

How to choose database

Most of us (I mean readers of Oracle related blogs) most probably have already decided which DBMS to use. However the world is changing and sooner or later either you'll have to choose a new DBMS or defend your favourite one.
Quite often we hear such argument like DB X is cheaper than DB Y, therefore we have to take this one. And cheaper usually means only license cost. However license cost is only one part of direct expenses not to speak even about indirect expenses.
So i've written an article trying to explain more than 10 criteria which should be analyzed before final decision. Article contains also a list of more than 30 databases with links to their sites one can choose from.

Sunday, November 04, 2007

The curse of gapless sequences

Gapless sequences are one of the best examples of bad requirements. Initially it was thought as an article for my blog but the result was too big and I've put it on my site.