| 摘要 |
PROBLEM TO BE SOLVED: To guarantee the capability of referring to the entire objects included in a set without the use of an exclusive lock, even when an object included in the set has been deleted. SOLUTION: In a method for managing data, the data corresponds to an entry including a reference to other data, and is managed on a set-by-set basis, which is an aggregate of data. A set corresponds to a connection list in which entries are connected correspondingly in the order the data are added. Each entry includes an insertion time sequence to the connection list and information whether the data was deleted from the set. In case the data is already deleted from the set, the entry is separated from the connection list at predetermined timing, and the data is referred to by the trace of the connection list. In case the insertion time sequence of a reference entry is later than the insertion time sequence of an entry being already referred to, the reference entry is decided to have been separated from the connection list. COPYRIGHT: (C)2010,JPO&INPIT |
