An example that calculates the inbound database volume.
InboundDataBaseVolume = sum(InboundTableVolume) + InboundTransactionVolume
TransactionVolume is the sum of the Message begin and Message commit pairs (250 bytes + 200 bytes) times the TransactionRate.
The transaction rates for each database are from the Transaction rates.
InboundDatabaseVolumeDB1 = 23K + 14K + (450 bytes/tran * 20 tran/sec) = 46K/sec
InboundDatabaseVolumeDB2 = 19K + (450 bytes/tran * 20 tran/sec) = 28K/sec