A Software Reliability

Abstract

Software reliability is the error-free working probability of software for a specified period of time under well-defined environment. Software is critical success factor consequently it is inevitable. Considering this software reliability has a strong effect on the reliability of the whole system. Another tendency is that the complexity of software is increasing in order that software could eliminate errors of the given system, environment and users. That is well-known fact that more complex systems have more possibility of errors. Testing of reliability has well-defined methods in case traditional systems. For example fatigue and wearing of a mechanical part or features of a lubricant can be calculated well. These methods are not suitable for estimation of software reliability. In case of traditional systems the conditions of operation and maintenance have influence on reliability of the system in case of software systems the correctness of the design has the main emphasis.