It also includes URL aliases, web site snapshots and home pagelocking.
也包括url别名，网站快照和锁的主页。
2
Better performance for concurrent business queries: Because MDC tables reduce page contention and locking, this also reduces disruption to the performance of concurrent business queries.
并发的业务查询能拥有更好的性能：mdc表减少了页面争用的锁，这一点同时也有利于并发业务查询的性能。
3
Since we are not manipulating locks ourselves, the engine is locking each row (or page) as it needs it.