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Bear in mind: S = Single Responsibility Principle
O = Opened Closed Principle
L = Liskov Substitution Principle
I = Interface Segregation Principle
D = Dependency Inversion Principle
摘要:
锁,是由锁管理器负责维护,其目的是保证事务的ACID,是平衡并发和数据安全的机制。锁定粒度与并发性是成反比的,默认情况下,SQL Server Compact 4.0 对数据页使用行级锁定,对索引页使用页级锁定。每次会话的锁数是有限的,当事务超出其升级阈值时,MicrosoftSQL Server ... 阅读全文