Data exchange system and data exchange method

A data exchange system used for exchanging data between a transmission user who owns data and transmits the owned data and a reception user who owns data and receives data,

• a transmission granting condition being a condition set by the transmission user, with regard to the data owned by the reception user, for selecting a reception user,
• a reception granting condition being a condition set by the reception user, with regard to the data owned by the transmission user, for selecting a transmission user, the data exchange system comprising
• a data exchange section having a step of determining, for each pair of the transmission granting condition and the reception granting condition, whether or not a transmission user corresponding to the transmission granting condition in the pair satisfies the reception granting condition in the pair and a reception user corresponding to the reception granting condition in the pair satisfies the transmission granting condition in the pair, and
• the data exchange section exchanges a data item between a transmission user and a reception user who are determined as mutually satisfying a reception granting condition and a transmission granting condition, respectively set by the reception user and the transmission user.

A data exchange method used for exchanging data between a transmission user who owns data and transmits the owned data and a reception user who owns data and receives data,

• a transmission granting condition being a condition set by the transmission user, with regard to the data owned by the reception user, for selecting a reception user,
• a reception granting condition being a condition set by the reception user, with regard to the data owned by the transmission user, for selecting a transmission user, the data exchange method comprising:
• a step of determining, for each pair of the transmission granting condition and the reception granting condition, whether or not a transmission user corresponding to the transmission granting condition in the pair satisfies the reception granting condition in the pair and a reception user corresponding to the reception granting condition in the pair satisfies the transmission granting condition in the pair, and
• a step of exchanging a data item between a transmission user and a reception user who are determined as mutually satisfying a reception granting condition and a transmission granting condition, respectively set by the reception user and the transmission user.