声明式事务划分允许您为软件的事务行为声明规则，并让事务管理器自动执行这些规则。
Declarative transaction demarcation lets you declare rules for the transactional behavior of the software, and have the transaction manager automatically carry out these rules.
另一个好处是，测试框架还强制您显式地声明特定程序执行路由的预期结果。
As an added benefit, a testing framework also forces you to explicitly declare the expected results of specific program execution routes.
在执行for语句时，游标被隐式声明，这样对于FOR循环的每一次迭代，取回的下一行就是结果集。
When a for statement is executed, a cursor is implicitly declared such that for each iteration of the for loop, the next row is the result set if fetched.
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