| 摘要 |
PROBLEM TO BE SOLVED: To provide a data sharing device suppressing a reduction in performance, and further to provide a data sharing method and a program.SOLUTION: A data sharing device comprises: first storage means; second storage means; difference generation means; difference transmission means; difference reception means; and difference reflection means. The first storage means stores first information. The second storage means stores second information being a duplication of the first information. The difference generation means compares the first information changed and the second information and generates first difference information indicating a difference therebetween when the first information is changed. The difference transmission means transmits the first difference information to the other data sharing device. The difference reception means receives second difference information generated in the other data sharing device. The difference reflection means reflects a difference indicated by the second difference information to the first information stored in the first storage means and, in this case, does not cause the first difference information to be generated by the difference generation means. |
