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.
(UPDATE: ABC canceled Nashville, but the CMT cable channel announced that it's picking up the series.) Castle (ABC): Costar Stana Katic had been let go, and ABC was making noises about continuing the show to Season 9, with Nathan Fillion and the supporting cast, so this was also a somewhat unexpected cancellation.