A flow record defines match (key) fields and collection (non-key) fields. Match fields are the set of fields that define a flow, such as IP address or UDP port. Collection fields are the set of fields that identify information to collect for a flow, such as packet and byte counters.

The music industry's 'Big 3' of Universal Music Group, Sony Music, and Warner Music Group, make up the of the music publishing market. These three companies exert control over nearly every aspect of the music industry by serving as music distributors, owning record labels, and coordinating artists' performance rights.