事务的（ ）是指事务一旦提交，即使之后又发生故障，对其执行的结果也不会有任何影响。
- A.原子性
- B.持久性
- C.隔离性
- D.一致性
正确答案及解析
正确答案
解析
事务的特性：
①原子性指事务是原子的，要么都做，要么都不做；
②一致性指事务执行的结果必须保证数据库从一个一致性状态变到另一个一致性状态；
③隔离性指事务相互隔离，当多个事务并发执行时，任意事务的更新操作直到其成功提交的整个过程，对其它事物都是不可见的；
④持久性指一旦事务成功提交，即使数据库崩溃，其对数据库的更新操作也永久有效。
依题意，应当选择B。
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