摘要: The rigorous object-oriented analysis (ROOA) method integrates formal description techniques with standard methods. ROOA provides a systematic development process which, starting from set of informal requirements, produces an executable objected-oriented model. model is expressed in LOTOS and precise unambiguous requirements specification the static, dynamic functional aspects problem. As executable, prototyping can be used to validate against requirements. Inconsistencies, omissions ambiguities detected sufficiently early so that feedback given requirement capture process.