In resilience-oriented development, the operational specification documents include definitions of the operational rules, which are based on the knowledge of experts, and obtained by procedures of system analysis. mistake in these definitions are detected during the operation, in the form of incidences: Strict rules will result in false incidences. Missing rules will result in latent failures.

Definition

Operational rules describe normative behavior, namely, the way the stakeholders believe the system should behave.

Rule representation

An operational rule can be either implicit or explicit:

• An implicit rule is one not described in the formal system documents, and thereof may or may not be implemented. They result in operation ambiguity
• An explicit rule is specified in the system documents, and thereof included in the system design.

The principle of rule implementation

  To ensure operational resilience, all operational rules should be formalized and implemented in the system design, explicitly.

Updated on 26 Mar 2017.