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Why data Tiering
2022-07-06 09:34:00 【Prism 7】
- Trade space for time , Through a lot of preprocessing to improve the efficiency of the application system , Therefore, there will be a lot of redundant data in the data warehouse .
- The data cleaning process can be simplified through hierarchical data management , It's equivalent to breaking a complex job into multiple simple jobs , When the data goes wrong , Often we just need to adjust a certain step .
- If it's not layered , If the original business system changes, it will affect the whole data cleaning process , Huge workload
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