License Statistics retrieves license usage data from the license servers and writes the data to a MySQL database.
Real-time usage reporting refers to gathering real-time data and usage statistics gathered from the license server at specified intervals and (see Viewing feature usage for information about update intervals), and storing this information in a MySQL database. Real-time monitoring allows you to gather usage information available since the time of configuration.
Imported usage reporting is used for existing data gathered from the log files of a variety of of Supported license servers.
...