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.
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。
Optimistic locking is an extremely efficient concurrency control method that guarantees data integrity without placing any physical lock in the database.
乐观锁是一个极其有效的并发性控制方法,它可以确保数据完整性而又无需在数据库中放置任何物理锁。
It provides simple and efficient access to XML with the same levels of security, integrity, and resiliency taken for granted with relational data.
它提供了对XML的简单高效的访问,并为相关数据提供了相同的安全性、完整性和弹性。
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