在ETL过程中，即时参照完整性和检查约束极其有助于检测数据问题，在最终的数据仓库表中实现它们也不会高效。
Even though referential integrity and check constraints are very helpful during the ETL process to help detect data problems, implementing them on final data warehouse tables is not efficient.
你能向数据集的多个数据表中添加新行、验证每行的有效性和参照完整性。
You can add new travel, test and verify to the middle of the many data table of data set every effectiveness and consult integrality.
你能向数据集的多个数据表中添加新行、验证每行的有效性和参照完整性。
You can add new travel, test and verify to the middle of the many data table of data set every effectiveness and consult integrality.
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