key range meaning in English

键控范围

The space is divided into partitions based on the key range of a partitioning index
索引的键范围，这种表空间被分成数个分区。
Identifies the key range within an index on which a lock is held or requested
标识持有锁或请求锁的索引中的键范围。 key表示为key
Used to synchronize access to read - ahead operations during key range parallel scans
用于同步在关键范围并行扫描期间对预读操作的访问。
Key range lock
键范围锁
When locking rows or index key ranges , the database engine places an intent lock on the pages containing the rows or keys
当锁定行或索引键范围时，数据库引擎将在包含行或键的页上放置意向锁。