Global temporary views are tied to the SparkSession, meaning they persist as long as the SparkSession is active. Detaching and reattaching a notebook to the same cluster does not affect the SparkSession, so the views remain accessible. However, they cannot be accessed across different clusters, and restarting the cluster (which creates a new SparkSession) will cause all temporary views to be lost. Additionally, global temporary views are not stored in a 'temp' database but in a special namespace called 'global_temp'.