The system development life cycle is the overall process of developing, implementing, and retiring information systems through a multistep process from initiation, analysis, design, implementation, and maintenance to disposal.
exists and is an alternate of . The fastest marathon ever was run by Geoffrey Mutai (2:03:02) at the Boston Marathon on April 18, 2011. But because the legendary Boston course does not meet IAAF layout standards, the World Record belongs to Patrick Makau (2:03:38) recorded at the Berlin Marathon on September 25, 2011.
In 1983 Mike Boit of Kenya ran a mile in 3:28.36. As far as I know, no one has ever covered the distance faster. This was on a downhill road course so it isn't recognized by IAAF but it's still the fastest mile ever run by a human. The world record in the mile run is the best mark set by a male or female runner in the middle-distance track and field event.