Golf data management system, data center, and method of managing golf data

A golf data management system comprising:

• a portable communication terminal that is a portable telephone having a golf data management program stored therein;
• and
• a data center that transmits data to and receives data from the portable communication terminal via a communication network,
• wherein the portable communication terminal comprises:
• a recording unit that records play data including a score and measurement data obtained by measuring a position of a shot or a putt by a measuring unit;
• a transmission unit that adds an individual identification number of a player who carries the portable communication terminal to the play data recorded by the recording unit, and transmits the play data to the data center via the communication network after holing out of each hole;
• and
• a display unit that stores the data transmitted from the data center via the communication network, and displays the stored data, and
• the data center comprises:
• an individual data storage unit that stores and manages practice result data and the play data corresponding to the individual identification number in accordance with each golf course and each play date;
• a common data storage unit that stores course map data of a plurality of golf courses;
• and
• an output unit that outputs the play data stored in the individual data storage unit in response to a request from the portable communication terminal,
• wherein said portable communication terminal is carried by each player and is connectable to an input device separate from said portable communication terminal via a signal line, infrared signal or radio-frequency signal, and is configured to receive at least a portion of the play data from the input device, the input device having input buttons including a shot button a putt button, and a penalty button.