The Releases screen is used to organize all items related to your releases, iterations (sprints), and builds. The Releases table contains one record for each release, iteration (sprint), or build, with a cross-reference to the related parent record.
Critical tables and views:
Releases table – Stores releases, iterations, and builds.
Releases view – Contains detailed information on releases, iterations, and builds.
ReleaseStats table – Accumulated data for the release, such as the number of linked items, roll up of estimated hours, and so on (1:1 relationship).