现有的实时数据广播研究中，只考虑了具有截止期约束的单个数据请求的调度问题，而支持实时查询处理的数据广播技术尚未得到足够的关注。
This paper proposes a novel scheduling algorithm called Query-based Scheduling Algorithm(QSA) to address the issue of real-time query processing in on-demand data broadcast environments.
数据流管理系统提出了一种通用结构模型，它采用窗口机制，连续查询以及相应的优化策略迅速高效地对实时数据进行在线分析处理。
DSMS is a common model, which adopts window mechanics, continuous query and many optimizing strategy to online analyzing and disposing real-time data quickly and efficiently.
实现了动态测量和静态测量，具有参数设置，时钟设置，数据实时处理、显示、存储、查询以及上传等功能。
It can work either in dynamic or in static state and it also has the functions such as parameter setting, clock setting, data real time displaying, saving, accessing, up sending etc.
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