Data changes flow in one direction, from the online processing server to the staging and reporting servers. 數據更改沿從在線(xiàn)處理服務(wù)器到臨時(shí)服務(wù)器和報告服務(wù)器一個(gè)方向流動(dòng)。
The data required at the batch processing server might be a subset of the data available at the online processing server. 批處理服務(wù)器所需的數據可能是聯(lián)機處理服務(wù)器上可用數據的子集。
It typically means inserting a timestamp column in each database table used concurrently by both batch and on-line processing. 它通常意味著(zhù)，在每個(gè)被批量和聯(lián)機處理并發(fā)訪(fǎng)問(wèn)的數據庫表中，增加一個(gè)時(shí)間戳列。
