| 摘要 |
The present invention relates to a method for ensuring data consistency upon mapping of a hierarchical data format to a relational database management system. According to the invention, a method for ensuring data consistency upon storage of a data item in a database, the data item having an identifier and a locator for linking the data item to a destination, whereby the identifier and the locator are stored in the database in addition to the data item, comprises the steps of: checking ( 11 ) whether the current combination of identifier and locator has already been stored in the database, and using ( 12 ) the stored combination of the data item if this is the case, in case the current combination of identifier and locator has not yet been stored in the database, checking ( 13, 15 ) whether either the identifier or the locator has already been stored in the database, replacing ( 14, 16 ) the current combination of identifier and locator with a univocal combination if this is the case, and storing ( 17 ) the univocal combination together with the data item, and storing ( 17 ) the current combination of identifier and locator together with the data item else.
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