| 摘要 |
A database architecture system includes a database including a plurality of tables for storing data records having a time of creation and a time of arrival. A plurality of current tables include current data records and have their time of creation meeting a first specified creation time period, and their time of arrival meets a specified arrival time period. The current data records which meet a specified extraction time period after the first specified creation time period are extracted to files. Data records in current tables, having their time of creation overlapping the specified extraction time period are not updated during extraction, but are accessible for querying. The current data records having a time of creation not overlapping the specified extraction time period are accessible for querying and updating during extraction. The data records in the files are deleted when their time of creation meets a specified deletion time period.
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