Apple just introduced iPhone OS 3.0 (beta) and 3.0 SDK. There are lots of improvements and new features. iPhone is a great platform for developing mobile applications. OS 3.0 makes it even more compelling for building Subject-centric solutions. One of my favorite features is Push Notification Service …

Traditionally, when we think about subject-centric approach to organizing information, we have in mind equivalent of “master data” – main entities, their properties and relationships. This type of information is relatively static. Of course, subject-centric approach works well also for representing/organizing information about “transactions” and “events”. ...