主存空间数据库需要相适应的空间索引。
指示选择的是空间索引。
指示空间索引的名称。
shx—存储图形的空间索引，使呈现及其他操作更快。
Example.shx - Stores a spatial index of shapes, making rendering and other operations faster.
除了真正创建一个空间索引外，您还必须熟悉最后一个部分。
Besides actually creating a spatial index, you have to be familiar with the last one, however.
现在我们将讨论最显著的一个方面，也就是对空间索引的使用。
We will now discuss the most obvious one, the exploitation of spatial indexes.
用于定义在查询执行期间空间索引的搜索范围的范围生成器函数。
Range producer function to define the search ranges for the spatial index during query execution.
告诉DB 2优化器在哪些条件下可以使用空间索引的空间谓词。
Spatial predicates that tell the DB2 optimizer under which conditions a spatial index could be exploited.
这里显示的形式中，这个接口和名称空间索引一起工作。
In the form shown here, this interface works with namespace indices.
“已选空间索引”列表显示为表定义的所有空间索引。
Selected Spatial Index list displays any spatial indexes that have been defined for the table.
单击显示在该列表下面的命令按钮可以添加或删除空间索引。
You can add or delete spatial indexes by clicking the command buttons that appear under the list.
实验表明，空间索引的引入，大大提高了数据质量检查效率。
The experiment shows that these two index methods greatly improve the efficiency of spatial data quality detecting.
可以为每个空间列添加多个空间索引，但必须一次创建一个。
You can add more than one spatial index to each spatial column, but you must create them one at a time.
这里我们解释您应该做些什么，以便让DB 2优化器选择使用一个空间索引。
Here we explain what you have to do to give the DB2 optimizer the choice to use a spatial index.
空间数据库系统通过引入空间索引机制来提高空间数据操作的效率。
Efficient processing of operations in spatial database systems relies upon auxiliary spatial indexing mechanism.
在分析现有空间索引方法特点的基础上，设计了一种分区索引文件方法。
Based on the analysis of the current spatial index method characteristics, a kind of partition index file method is designed.
可以为每个空间列创建多个的空间索引，但必须每次只创建一个空间索引。
You can create more than one spatial index for each spatial column, but you must create them one at a time.
针对空间数据的访问控制的特点，提出了基于空间索引的区域访问控制概念。
Aim at the characters of spatial data access control, the concept of spatial region access control based on spatial index was proposed.
引入SDE空间数据索引技术，通过改善空间索引的性能来优化空间数据库。
Optimize the spatial database by improving space data index performance based on SDE.
结果表明，改进的层次网格空间索引大大提高了索引的效率和自适应的能力。
Test results show that in most case the creative theories improve the performance and adjustability of index.
性能可能会提高的原因是行锁定可以更好地避免空间索引中按顺序排列的行出现死锁。
Performance might improve because rows locks can better avoid deadlocks with collocated rows in the spatial 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。
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.
若要修改某个空间索引，可以在该列表中单击该索引，然后对它的一个或多个属性进行更改。
You modify a spatial index by clicking it in the list and changing one or more of its properties.
spatial extender提供了一个indexadvisor，以帮助您调优空间索引。
The spatial extender provides an index advisor that helps you to tune your spatial index.
电力GIS系统需要对各种空间数据进行有效处理，这就要求有一个高性能的空间索引结构。
Power GIS needs to deal with a variety of spatial data effectively, so it requires a high-performance spatial index structure.
本文总结出空间索引系统应提供的三类空间查询：空间范围查询、最近邻居查询、空间连接查询。
We summarize that spatial index system should provides three kinds of spatial query, they are, spatial range query, nearest neighbor query, spatial join query.
树型空间索引可以高效地组织并检索高维数据，因此使用树型空间索引是改善聚类性能的有力途径。
The structures and performances of all kinds of tree-like spatial indexes are analyzed in this paper.
并且对遥感影像库所特有的功能：空间参照，分块后空间索引，建影像金字塔等关键技术进行了研究。
And a research on the remote sensing image database's special functions such as Georeferencing, Pyramiding, spatial indexing is also made.
然而，如果由于空间索引的复杂性质导致DB 2 REORGTABLE命令不理解空间索引，事情就不会那么容易了。
However, it is not so easy for spatial data given that the DB2 REORG TABLE command does not understand spatial indexes due to their complex nature.
论文将围绕专题军事地理数据库引擎的一些相关问题，对它的数据模型、空间索引结构、系统设计及开发过程进行研究。
The paper discusses several problems based upon SMDE, and do some research on data model spatial index structure, system designings and the process of exploiture.
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