| 摘要 |
PROBLEM TO BE SOLVED: To easily grasp a relation between contents which are shared by communication.SOLUTION: An information processing system includes: a database that stores a content identifier for identifying content data and a communication identifier for identifying communication executed in association with the content data, in association with each other; and association means that when first content data and second content data are shared in association with communication performed between a first user and a second user, associates a first content identifier for identifying the first content data and a second content identifier for identifying the second content data by using a communication identifier for identifying the communication.SELECTED DRAWING: Figure 1 |
