导航菜单

r-tree是什么意思_翻译中文_怎么读

r-tree

网络释义:空间;空间索引技术;R树

网络释义

1.空间理建立在功能强大的服务器上,同时又实现了非常高效的空间索引技术(R-tree),所以能轻松地处理海量数据;利用Oracle可 …

3.R树 二叉空间分割( Binary space partitioning) R树( R-tree) 空间索引( Spatial index) ...

4.参考树索引 hash, 索引类型 R-tree, 索引类型 NOT NULL, 非空约束 ...

例句释义:,空间,空间索引技术

1.An R-Tree data structure stores information about multi-dimensional data and is used for indexes on spatial or geographical data.R-Tree数据结构可以保存有关多维数据的信息,并用于有关空间或地理数据的索引。

2.Note: the query optimizer will not use the R-Tree index unless the statistics on the table are up to date.注意:查询优化器只有在表统计信息保持最新的情况下使用R-Tree索引。

3.With time-parameter R-tree, a novel spatiotemporal histogram was proposed to estimate the selectivity for spatiotemporal querying.结合TPR-树索引结构,构建满足时空查询的直方图,估算时空查询的选择性。

4.In this paper, a new algorithm is presented for overcoming the disadvantages of the old algorithm in distributing node of R-tree.针对R-树的结点分配算法存在的不足,提出了一种新的结点分配算法。

5.Since the data is spatial, you need to specify the R-Tree access method for this index.由于涉及到空间数据,您需要为这个索引指定R-Tree访问方法。

6.A functional index can specify different access methods that include B-Tree, R-Tree, and user-defined access methods.函数索引可以指定各种不同的访问方法,包括B-Tree、R-Tree和用户定义的访问方法。

7.That is to say, for very large spatial databases, QR-tree processes more superiority than R-tree.也就是说,对于大型空间数据库索引来说,QR-树与R-树相比整体性能上具有较明显的优势。

8.Compared with grid and R-tree, the index has spghtly space costs but most higher index performance.与网格索引和R树索引相比,该索引以略大的空间开销换取了更高的查找性能。

9.In this example we show you how to create a functional index that uses the R-Tree access method.在本例中,我们将向您展示如何创建使用R-Tree访问方法的函数索引。

10.the classical r - tree as index is adopted in spatial joining . r - tree is performed by bulk loading在空间连接处理的算法上采用了经典的r树作为索引,采用批生成算法生成r树。