| 摘要 |
The present disclosure introduces a method, an apparatus, and a system for extracting incremental data. Primary key information of incremental data is obtained from a backup database. The incremental data is inquired based on the primary key information from a main database that synchronizes with the backup database. The found incremental data is then inserted into a target data warehouse. The present techniques not only save a lot of time and system resources but also improve the efficiency of incremental data extraction. |
