| 摘要 |
PROBLEM TO BE SOLVED: To provide a banking system for not taking file access(FA) processing time even when the large volume of data records(DRs) are added to a file. SOLUTION: In this system, when the access of the DR is requested from a program 10, the FA control part 21 of an FA part 20 retrieves a pertinent cluster among the respective kinds of the clusters in the respective files 51 and 52 of different block lengths by referring to index information and accesses a target DR, and wen the new DR is added from the program 10, whether or not a cluster size exceeds a block size is judged in an FA judgement part 22. The cluster size at the time of exceeding the block size is calculated in the cluster length calculation part 31 of a DR copying part 30, the file of the file length capable of storing the cluster in one block is retrieved and copied in a cluster storage part 32, the cluster is eliminated from the original file and the storage address information of a data index table 40 is updated. |
