Object Oriented Software Engineering   View all facts   Glossary   Help

subject > problem > failure

failure (bug)
subject			fact

failure	is a synonym of bug
	can be the result of a violation of an implicit requirement
	has definition An unacceptable behaviour exhibited by a system
	has example the production of incorrect outputs, the system running too slowly, or the user having trouble finding online help
	is usually the result of a violation of those requirements that are stated explicitly in a requirements document
	is a subtopic of 10.1 - Basic Definitions
	is a kind of problem
	may arise from violations of either functional requirements or non-functional requirements
	may be cause by several defects working together
problem	has solution which will normally entail developing software, although you may decide that it is better to purchase software or to develop a non-software solution
	should be written as a simple problem statement in one or two sentences

Kinds of failure :

• crash (2 facts)
• deadlock or livelock (2 kinds, 8 facts)