At present, more and more people have multiple intelligent terminal devices, which greatly facilitates people's work and life.Backups between operating systems and Transmission between network computers.The ability to view the differences in individual files.The ability to preview any changes before the change.Most synchronization programs can be used in this way, but providing specific support for this can reduce the amount of data stored on the device Especially supports the use of intermediate storage devices (such as removable flash drives ) to synchronize two computers.Distributed conflict detection can use the version vector to copy the data or application files in use or exclusively locked database files, "open file support" can ensure data integrity For conflict detection, the synchronization software needs to keep a database of synchronized files. Undetected conflicts may result in overwriting the copy of the file with the latest version, resulting in data loss. Conflict detection modifies the location of the file on two sources instead of on one source.Encryption to ensure security, especially when compressing any data sent through the network when synchronizing via the Internet.The general file synchronization system has the following functions: Nowadays, general file synchronization usually refers to two-way file synchronization. In two-way file synchronization, updated files are copied in both directions, usually to keep the two locations the same. In one-way file synchronization (also called mirroring), the updated files are copied from the "source" location to one or more "target" locations, but no files are copied back to the source location.
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