提出了面向实时应用的时态数据库系统Agilor-TDB,详细介绍了系统的体系结构。针对实时应用,实现了实时任务调度。在数据存储方面介绍了基于时间区间的多级文件索引结构和高效的内存数据管理机制;在数据查询方面提出了高速查询缓存优化策略。此外,用PN模型对系统并发控制进行了详细描述。
This paper proposed a temporal database system: Agilor-TDB and gave a detailed description of the overall architecture. And it realized real-time scheduled aiming at real-time application. In aspect of data storage, it discussed multi-level index scheme based on time-period and effective data management mechanism of memory. In aspect of data querying, it proposed optimized strategy of fast query cache. In addition, depicted carefully concurrency control scheme using PN model.