| 摘要 |
PROBLEM TO BE SOLVED: To manage the versions of respective data only by irreducible specification by adding its address and version information regarding its version to acquired data, etc., and storing them. SOLUTION: A data acquisition part 101 acquires data of a specific address from a hypermedia data group. An address extraction part 102 extracts addresses embedded as anchors in the data and stores addresses which are stored in a specific condition storage part 105 and meet specific conditions in an address storage part 103. An address selection part 104 indicates addresses to be acquired from the stored addresses. A specific condition storage part 105 stores specific conditions such as address acquisition time intervals of addresses, etc. A data storage part 106 adds addresses and version information to the acquired data or their processed data and stores them. A version management control part 107 performs control regarding the version management by using the stored information.
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