A directory service defines a namespace for the network. The namespace is used to assign a name (unique identifier) to each of the objects. Directories typically have a set of rules determining how network resources are named and identified, which usually includes a requirement that the identifiers be unique and unambiguous.
The Houston Oilers moved to Tennessee and became the Tennessee Oilers for the 1997 season. The team changed their name from Oilers to Titans in 1999. 1 person found this useful.
John Sommers II/Getty Images. The Houston Astros will be moving from Major League Baseball's National League to the American League as soon as the 2013 season, MLB announced this afternoon. And, two wild card teams are going to be added to baseball's playoffs, possibly as soon as next season.