Once you have a connection, you can begin to execute commands against the database.
一旦建立了连接，就可以开始对数据库执行命令。
Often when you plan, the project will begin to execute before your planning is complete.
通常在您计划时，项目会在您完成计划之前就已经开始执行了。
For example, the task in Listing 4 would begin to execute the four rules identified by their names for the project named BANK.
例如，清单4中的任务将开始执行项目BANK中的4个规则(以名称标识的)。
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