Canonical set of rules for systems?

Hi Folks,

When designing a system make explicit the rules of the system. These rules include:

- rules that define the system's process/workflow

- rules that define the data validity of documents routed through the system

- rules that define the system's user interface

- rules that define the relationship/taxonomy of the system's data


What other rules are there in systems?

Is there a canonical set of rules?


Here's a start at a canonical set of rules for systems:

1. Process/workflow rules

2. Data validity rules

3. User interface rules

4. Data relationship rules

What else?

/Roger