Jurisprudential analysis - legal cause of action In civil cases

Couse of action is one of the most important subjects of civil procedure although have not been given it sufficient attention despite its importance. Cause of action is a cause that breach the legal policy between persons and beacause of it they entitled to bring action. Couse of action or in the form of a violation of the right, or in the form of ignoring and not exercising the rights, regardless of the source of the law of law or the contract. But is concept of cause of action unique in all context of civil procedure? Writeres have three theory about notion of it. Some say cause of action is merely matters of fact. Some say that it is matter of law. In our opinion we most study concept of cause of action at two separate domain. In domain of duty of parties and judge to bring and proving matter of facts and in domain of res judicata. My aim is to present and describe this opinion.