数据广播环境下实时查询处理: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-Data broadcasting environment in real time query processing: the existing broadcasting of real-time data, only consideration with deadline constraints of a single data request scheduling problems, and support real-time query processing in data broadcast Jishu not get enough attention