The end goal of this article's exercise was to prepare an existing dataset for spatial queries, including distance-based ones.
本文的最终目标是为进行空间查询(包括基于距离的查询)而准备现有的数据集。
The paper presents three methods of spatial queries: spatial Select Query, spatial Joint Query, and Nearest Neighbor Query.
该文还介绍了三种查询方法：空间选择查询、空间连接查询和最近邻居查询。
Now that the spatial table is populated, it is time to add a spatial index to support spatial queries; in DB2 that is a grid index.
既然已经填充了空间表，就应该添加空间索引来支持空间查询了；在DB 2中这是一个网格索引。
Due to its large amount of spatial data and highly complex spatial objects and spatial queries, the study of spatial queries become focus of spatial database research.
由于其庞大的空间数据量以及空间物标、空间查询的高度复杂性，空间查询成为空间数据库应用的难点和研究热点。
Spatial queries are one of the best examples to show locality of data access, in other words, geometries that are close to each other in the real world are often accessed together.
空间查询是展示局部数据访问(换句话说，现实中临近的几何图形常常被一起访问)的最好例子之一。
These include Enum support, Spatial data types, auto-compiled LINQ queries, Table-Valued functions, and stored procedures with multiple results.
这些特性包括枚举支持、空间数据类型、自动编译LINQ查询、表值函数和多结果存储过程。
This prepares the database for use by a GIS and for spatial business logic implemented in SQL, including distance-based queries.
这使数据库准备好供GIS使用并支持SQL中实现的空间业务逻辑，包括基于距离的查询。
Such indexes help to improve the performance of queries on spatial data.
这类索引有助于改善针对空间数据的查询的性能。
Therefore, the following queries calculate the size of the data based on the attributes of the spatial data types.
因此，下面的查询根据空间数据类型的属性来计算数据的宽度。
First we run a set of spatial operations and queries without the suggested configuration changes on a newly installed system.
首先在一个新安装的系统上，在应用建议的配置更改之前，我们运行一组空间操作。
Queries for other projections result in an error message asking the visitor to "request a supported SRS" (that is, a spatial reference system - essentially, the projection).
对于其他投影的查询会导致错误消息，要求访问者“请求一个受支持的SRS”(即一个空间参考系统—本质上，就是这个投影)。
The add-in can be used to build map graphics against queries on SQL Server 2008 spatial data.
该插件可和MapPoint一块用于查询SQLServer 2008空间数据以建立图解地图。
To achieve some reliable results, we executed the import operation and queries several times and averaged the measured times. The spatial operations are the following.
为得到比较可靠的结果，我们多次执行导入操作和查询，对测量到的时间取平均值。
One frame is used to specify multiple SQL queries, where each query defines a single layer and the spatial and non-spatial data is retrieved from your DB2 database.
其中一个框架用于指定多个SQL查询，每个查询定义一个层，并从DB2 数据库中检索空间和非空间数据。
We show the queries in the upper left frame, the rendered SVG output in the lower frame, and the non-spatial attributes in the upper right frame.
左上角的框架显示查询，下面的框架显示sVG输出，右上角的框架则显示非空间属性。
A database system in which most of the data are spatially indexed, and upon which a set of procedures operated in order to answer queries about spatial entities in the database.
一个数据库系统，其中大多数数据是空间索引的，依靠它可以操作一系列的过程，从而回答在这个数据库中关于空间实体的请求。
In wireless sensor networks, the users often submit spatial window queries to obtain the summary information of a local area in the network such as maximum temperature, average humidity, et al.
在无线传感器网络环境中，用户经常提交空间范围查询以获取网络某局部区域的统计信息，如最大温度、平均湿度等。
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.
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.
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。
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