However, in the absence of data distribution information, the optimizer will calculate selectivity for filters of different types based on table indexes.
然而在缺乏数据分布信息的情况下，优化器将基于表索引计算不同类型筛选器的选择性。
The simulation is categorized as a sampling method because the inputs are randomly generated from a probability distribution that stands in for a real data population.
模拟是按照采样方法分类的，因为输入是根据代表真实数据总体的概率分布而随机生成的。
Otherwise, the interconnected data marts and business-wide distributed data warehouse are more practical choices for businesses with a wide geographic distribution.
否则，对于在地理上广泛分布的业务而言，互连的数据集市和业务范围的分布式数据仓库就是更加实用的选择。
The optimizer USES data distribution information generated by UPDATE STATISTICS to calculate selectivity for the filters in the query.
优化器使用UPDATESTATISTICS所生成的数据分布信息来计算查询中筛选器的选择性。
For read-only data, replication and distribution are also possible (as is done using content delivery networks).
对于只读数据，也可以进行复制和分布(使用内容传递网络完成)。
Generate data with given distribution of values for several columns.
为几个列生成具有给定值分布的数据。
Refer to Chapter 10 of the Performance Guide for the detailed table that the optimizer USES to calculate selectivity in the absence of data distribution.
关于在缺乏数据分布的情况下，优化器用以计算选择性的详细表，请参阅performanceGuide的第10章。
GetDistributionByArea (...) for retrieving the distribution data for the selected brand through the chart data access component ChartDataAccessor.
getDistributionByArea(…)用于通过图表数据访问组件ChartDataAccessor，检索所选品牌的分布数据。
By devising a strategy for storage allocation and distribution based on the business value of data, the theory went, we could reduce quantities of expensive high-end storage and thereby shrink costs.
其理论在于，以数据的商业价值为依据，制定存储分配和发布策略，从而能够减少昂贵的高端存储设备的数量，这样也就缩减了成本。
To provide a useful vehicle for Data Governance regarding responsibilities for information creation, update, deletion, distribution and use.
为数据治理在信息的创建、更新、删除、分发和使用上提供一个有用的工具。
This article discusses how to make up a test data set so that it is large enough to be useful for testing and has the expected distribution of values and correlation between columns.
本文讨论了如何构建一个测试数据集，以使该数据集达到用于测试的规模，并且具有期望的值分布和列间相关性。
Duplication within a single source or across sources as found through either a frequency distribution or a record linkage indicates that a consolidation is needed for presentation of the data.
通过频率分布或记录链接发现的单个源内或跨多个源的重复表示，需要通过合并来提供数据。
MDM Services can also be used to maintain and control the distribution of reference data that should be maintained at the global level for an organization.
对于应该在企业范围维护的引用数据，还可以使用MDM服务维护和控制它们的分发。
For example, the distribution channels describe behavioral data, and the country describes a demographic property.
例如，分销渠道描述行为数据，而国籍则描述人口统计属性。
For the distributed database systems, query processing becomes more difficult because of distribution and redundance of data.
在分布式数据库系统中，由于数据的分布和冗余，查询处理变得更为复杂。
For quantitative analysis of automobile reliability based on its reliability data collected, it is necessary to recognize the distribution pattern of data in advance.
根据汽车可靠性工程数据，对其进行可靠性定量分析时，应该首先判别可靠性数据的分布规律。
An evaluation method for event set data structures based on event set distribution function is presented in this paper, and three event set data structures are analysed by the method.
本文提出了一种基于事件表分布函数的事件表数据结构的评价方法，并使用这种方法分析了三种事件表数据结构。
Architect Data Distribution Service for Real-Time Systems (DDS) applications to manage the complexity of interconnected components.
实时系统(DDS)程序的结构数据分布服务，以管理相互联系构件的复杂性。
An application specifies the slice for a new instance via Data Distribution policy. This policy can be configured in persistence.xml as follows.
应用程序就是通过数据分布策略指定与新实例相关联的片的。
Locate the default event server profile and ensure that the check boxes for Enable event distribution and Enable Data Store are selected so that both persistence and distribution of events will occur.
找到默认事件服务器概要，并确保已选择了EnableEventDistribution和EnableDataStore的检查框，以便持久性和分发都将发生。
Data on customers is important for both the accounting department and the sales and distribution department.
有关客户的数据对于会计部门和销售和分销部门都是非常重要的。
It is significant for electric power enterprise to integrate planning data and to realize electric power distribution planning and assistant designing.
该系统为电力企业实现规划数据集成和实施配电网规划辅助设计具有一定的意义。
It is an effective method to forecast ground water quality, which needs only fewer data and no special requirements for their distribution as well as easily calculates.
建模需要的数据较少，对数据的分布无特殊要求，方法和计算简单，实用价值大，是地面水质预测预报的一种有效方法。
Through theoretic analysis, we obtain the formula to calculate the parameters for fusion of two uniform distribution data.
当待融合数据为两个时，通过理论分析得到了计算融合参数的公式。
Neural network can solve some problems of blast furnace expert system such as knowledge getting and inference ability, and it is suitable for pattern recognition of blast furnace data distribution.
神经网络可以解决高炉专家系统最困难的知识获取与推理能力弱等问题，并适合于对高炉分布数据进行模式识别。
Printed catalogue CARDS are not the only media for distribution of cataloguing data.
印刷目录卡片不是唯一的传播编目数据的工具。
The unloading point, for example, which is regarded as general data, is only relevant for sales and distribution.
比如，被认为是一般数据的卸货点就只和销售和分销有关。
A question of formation confidence interval for scale parameter of normal distribution from incomplete observational data is discussed.
对于残缺的样本观测数据，讨论了正态分布总体尺度参数的区间估计问题。
The key distribution protocols are important support for safe data communication, but some of them may be attacked again even adopt new safe key after key betrayed.
密钥分配协议是数据安全通讯的重要支持，但是一些协议在发生密钥泄露后，即使用新的安全密钥取代，仍有可能遭受再次攻击。
The key distribution protocols are important support for safe data communication, but some of them may be attacked again even adopt new safe key after key betrayed.
密钥分配协议是数据安全通讯的重要支持，但是一些协议在发生密钥泄露后，即使用新的安全密钥取代，仍有可能遭受再次攻击。
应用推荐