Measuring the Survivability of Object-Oriented Software

In this paper, we present a method to measure the survivability of an object-oriented software in design phase. Each component is responsible for this measuring and the relations between components are based on the communication type. Each component can be characterized by a composite Petri net which combines the features of statechart and object diagram. A fuzzy number is introduced to this net to represent uncertain elements that might affect the survivability. Survival possibility theory has been used to produce survivability measure function for each component. A survivability measure index is defined for the system, and we proved that this index is monotonic.