POEM Potential slide-10

What about State Changes?

Web Services may change state of the world.
Approach: Use Database Integrity and Dynamic Update Technologies

The real world is just another database.

Database Integrity and Dynamic Update Constraints describe physics of state change

Web Service physics require a better description

Minimally Pre-conditions and Effects

Thus the need for Semantic Web Services

Web service world needs to pay attention to Deductive Database principles.
Database people need to work more on Dynamic Update Constraints.
AI Planning is relevant to Dynamic Update Constraints.

@copy 2007 Charles Petrie - permission to reproduce widely with attribution