Because there is no error handling logic, you must rely on database constraints to ensure semantic integrity of the data.
因为没有错误处理逻辑，必须依靠数据库的限制，以确保数据的语义完整性。
The KPI history requests are asynchronous; an event can be dispatched after you have verified the data and finished the error handling.
KPI历史记录请求是异步的；可以在验证数据并完成错误处理后发出事件。
The basics of Programming (variables, data types, references, pointers, scope, error handling, iteration, core algorithms - searching, sorting, etc.)
编程基础（变量，数据类型，引用，指针，作用域，错误处理，迭代，核心算法-搜索，排序等）
Error handling, provided as part of the input specifications, permits the reentry of bad data, or the continuation of the input process after skipping over the bad data.
错误处理，作为规范的一部分提供，允许出错数据重入，或者跳过出错数据，继续输入过程。
To keep this demo simple, we will not be covering unit testing, input validation, error handling, data encapsulation, authentication, routing, or any other facets of a well designed MVC application.
为了简洁，不会牵涉到单元测试，输入验证，错误处理，数据封装，审核，路由或任何MVC设计有关的细节。
To keep this demo simple, we will not be covering unit testing, input validation, error handling, data encapsulation, authentication, routing, or any other facets of a well designed MVC application.
为了简洁，不会牵涉到单元测试，输入验证，错误处理，数据封装，审核，路由或任何MVC设计有关的细节。
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