| 摘要 |
A method of synchronizing at least one database including first data records of a portable electronic device with at least one other database including second data records. The method includes receiving information representative of the first data records and comparing the information representative of the first data records with information representative of the second data records to determine if changes made to either the first data records or the second data records are not reflected in the other of the first and second data records. If changes made to the second data records are not reflected in the first data records, only partial content of ones of changed second data records is transmitted to the portable electronic device. The partial content includes key fields of data sufficient to uniquely identify the ones of the changed second data records in which the key fields of data are contained. After transmitting only partial content of the ones of changed second data records to the portable electronic device, full content of the ones of changed second data records for which only partial content has been transmitted, is transmitted until either full content of each of the ones of the changed second data records is transmitted or a low memory condition is determined at the portable electronic device.
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