International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Software reliability is the ability of a system or component to perform its required functions under stated conditions for a specified period of time. Reliability engineering is a sub-discipline within systems engineering. Reliability is often measured as probability of failure, frequency of failures, or in terms of availability, a probability derived from reliability and maintainability. Further to estimate as well as to predict the reliability of software systems, failure data need to be properly measured by various means during software development and operational phases.