比特流文件生成三个阶段，当设计不满足性能指标或不能完全布线时，可进行以下改进 工作： 使用定时约束 （ Timing Constraints ）； 增大布局布线级别（PAR Effort）； 对关键通路（Critical Paths）的数字逻辑重新设计； 运行重布线（Re-entrant Rou..
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Create Timing Constraints 创建时序约束
Global timing constraints 全局时序限制
Timing Constraints Consistency 时间限制一致性
Clocks And Timing Constraints 时钟和时序限制
A Real-Time Database System (RTDBS) is a database system designed to process transactions with timing constraints, i. e. deadlines. In RTDBSs, the primary criterion is the percentage of the transactions that miss their deadlines, i. e. miss ratio.
实时数据库系统处理具有时间约束的实时事务，其性能指标是错失截止期的事务所占的比率，即错失率。
参考来源 - 实时事务并发控制算法优化·2,447,543篇论文数据，部分数据来源于NoteExpress
Timing constraints: Measures the duration of method calls.
时间约束：测量方法调用的持续时间。
In building the timing constraints, do you need to constrain all IO ports?
写时序约束时，是否需要对所有的IO端口加约束？
If the timing constraints of the system are not met, system failure is said to have occurred.
如果未满足系统的时间约束，则认为系统失效。
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