分布式环境内的聚集查询。
提出了基于属性簇的时空数据聚集查询算法。
In this paper, based-on attribute-cluster, a new spatiotemporal data aggregation query algorithm is proposed.
目前，Slice可以正确地估计一个聚集查询，不是分区可互换的。
Currently, Slice can evaluate an aggregate query correctly that is not commutative to partition.
在聚类和非一致性数据库无聚集查询基础上提出聚集查询重写方法。
This paper presents the rewriting method for aggregation queries based on clusters and non-aggregation queries in inconsistent databases.
缓存表类似于具有以下限制的MQT，即缓存表只支持单个表上的非聚集查询。
Cache tables are similar to MQTs with the restriction that a cache table supports only non-aggregate queries over a single table.
时态数据库扩展了传统的关系数据库，其中一个重要的扩展就是对于时态聚集查询的支持。
Temporal database systems extend traditional relational database systems. One important such extension is to support time-varying aggregation.
它不仅保留了前缀立方在计算和组织结构上的优点，又能直接和充分支持维层次级的聚集查询。
HierPrefixCube retains advantages on computation and organization of PrefixCube, and it can directly support aggregate queries on levels of the dimension...
高速数据流聚集查询：目前已有的聚集算法绝大多数是采用近似技术，以牺牲精度来换取速度的提高。
Aggregation query over high rate data streams: basically, most existing aggregation algorithms adopt the approximation technology to obtain the advancement of rate by sacrificing the accuracy.
提出了一种增强预测范围聚集查询epra算法，采用更精确的剪枝搜索准则，减少了查询所需要访问的节点代价。
Also developed for the PRA tree is an enhanced predictive range aggregate (EPRA) query algorithm which USES a more precise branch and bound searching strategy, reducing the disk I?
提出了一种基于硬件加速的高速数据流聚集查询方法，充分发挥硬件在处理速度上的优势和软件在灵活性方面的长处。
In this paper, We propose a kind of novel aggregate query algorithms based on hardware-software codesign, which incorporate hardware advantage in processing rate and software long suit in agility.
讨论了目前聚集查询处理的两种方法，即实化视图和近似查询，总结了国内外对其研究现状，并对未来的研究方向提出看法。
This paper deals with two ways to manage aggregate queries: materialized view and approximate query, concludes the processing methods of each way and presents future research directions.
本文对空间区域聚集查询进行了深入的研究，提出了两级物化的方法，该方法能有效地在空间维和非空间维上进行区域聚集查询。
This paper analyzes the spatial range aggregate queries, and presents the two-stage materialized method. It processes efficiently range aggregate queries on spatial and non-spatial dimension.
研究了聚集查询重写的特征，根据数据仓库环境下聚集查询需要快速计算结果的特点，给出了一个基于聚集查询重写的快速近似计算模型。
This paper researches into the characteristic of aggregate query rewriting and gives a kind of rapidly approximate query computing model based on aggregate query rewriting under the data warehouse.
为了减少在计算和存档数据流的过程中对昂贵的存档数据的存取，分析了聚集数据查询的特点，并引入了聚集查询语言和聚集查询重写方法。
To reduce the expensive access to archive data, the characteristics of aggregate data query were analyzed, and the aggregate query language and its rewriting method were proposed.
基数估计是这样一种过程：在应用了谓词或执行了聚集之后，优化器使用统计信息确定部分查询结果的大小。
Cardinality estimation is a process by which the optimizer USES statistics to determine the size of partial query results after predicates are applied or aggregation is performed.
如果协调者节点不能识别正确的节点，那么它会将查询广播给所有节点，然后聚集它从这些节点那里收到的响应。
If the coordinator node is unable to identify the correct node, it broadcasts the query to all nodes, and then coalesces the responses it receives from them.
为什么要使用聚集搜索查询来预测？
So why bother with estimates from aggregated search queries?
如果您是单独使用UDDI4J的，那么您必须自己编写代码向不同的UDDI注册中心发出多个搜索查询，并设法自己聚集数据。
If you are using UDDI4J alone, you must write your own code to send out multiple search queries to different UDDI registries and then try to aggregate the data yourself.
按照空间属性聚集这些行的效果取决于在查询时对一个数据子集的访问。
The effects of clustering the rows by their spatial properties rely on accessing just a subset of the data during query time.
在一个查询中连接、联合、聚集来自多个数据源的数据并使它们相关的能力。
Ability to join, union, aggregate, and otherwise correlate data from multiple sources in a single query.
包含连接、分组、聚集和排序操作的决策支持查询。
Decision-support queries that involve joins, groups, aggregates and sort operations.
研究FOAF时，我构建了软件代理FOAFBot，它聚集并回答有关FOAF信息的查询。
While investigating FOAF, I built a software agent, FOAFBot, which aggregates and answers queries about FOAF information.
它如何聚集和分类来自很多分区的查询结果？
之后，所有要做的就是编写XQuery查询，该查询将选择并聚集用于报告的数据，并按最终需要的格式(xml或html)对它们进行格式化。
Then all that was needed was to write XQuery queries, which would both select and aggregate the data for the report, and format them into the final desired format (XML or HTML).
聚集运算是传感器网络查询处理中最重要的一个运算。
Aggregation is one of the most important operations in query processing for sensor networks.
本文从并行数据库系统的体系结构、并行数据库的查询，聚集，排序及数据可靠性等方面入手，阐述了对并行数据库的认识和看法。
This paper discusses the understanding on the parallel database from the architecture of parallel database systems, parallel database query, aggregation, sorting, and data reliability.
这条查询语句在聚集索引查找下很顺利的执行成功。
This select executes just fine with clustered index seek in the plan.
在数据仓库环境下，经常会碰到涉及大量数据的复杂查询，包括多表连接、聚集计算等。
Under data warehouse environment, the complex query of the mass data are met frequently, including the multi-tables join, gathers the computation and so on.
通常，OLAP查询只需要对数据记录进行只读访问，以进行汇总和聚集。
An OLAP query often needs read-only access of data records for summarization and aggregation.
通常，OLAP查询只需要对数据记录进行只读访问，以进行汇总和聚集。
An OLAP query often needs read-only access of data records for summarization and aggregation.
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