System Tables The following list mentions all the system tables used by Unica Contact Central. UPC_PREFERENCE_TYPE UPC_REGIONAL_PREFERENCE UPC_CHANNEL_PREFERENCE UPC_CHANNEL_PREFERENCE_MAPPING UPC_CHANNEL UPC_CHANNEL_CAPACITY UPC_CHANNEL_CAPACITY_TRANSACTIONS UPC_CONSENT_CATEGORY UPC_AUDIENCE UPC_CONSENT UPC_CONSENT_DETAILS