参看 COCOMOII，了解在估算中应用系数的技术。
See COCOMO II for techniques for applying coefficients in estimation.
即使公司希望采用XML技术，也不太可能愿意放弃多年来在关系数据库上的开发成果并用NXD替代它。
Companies that want to take the next step and adopt XML technologies are unlikely to throw away the results of many years of development and replace it with an NXD.
从狭义上说，它是指特殊的统计技术：基尼系数(the Gini coefficient)、邹氏检验(the Chow test)等等。
More narrowly conceived, it can refer to particular statistical techniques: the Gini coefficient, the Chow test, and so forth.
所以，我们可以把-1看成一个常量输入，它的权系数theta在学习（或者用技术术语，称为培训）的过程中进行调整。
So, it is possible to treat -1 as a constant input whose weight, theta, is adjusted in learning, or, to use the technical term, training.
对于其他数据源(比如非关系数据)或是其他的数据库访问技术(比如LINQ toSQL)来说，ADO.NET Data Services又提供了一种机制将这些数据源建模为实体和关系(比如通过EDMschema描述)并将其暴露为数据服务。
LINQ to SQL a mechanism is provided which enables any data source to be modeled as entities and associations ie. described using an EDM schema and exposed as a data service.
集群关系数据库以获得可伸缩性和可用性是一种业已建立的良好规程，因此我们不再花费时间讨论集群关系数据库的技术。
Clustering of relational databases for scalability and availability is a well established discipline, and so we will not spend time discussing techniques for clustering relational databases.
比方说，虽然JDBCDMS需要知道持久性技术(比如关系数据库)，以及如何配置和访问数据，SDO客户机不需要了解这些细节。
While a JDBC DMS, for instance, needs to know about the persistence technology (for example, relational databases) and how to configure and access it, SDO clients need not know anything about it.
用基于 SQL 的模式可以把数据呈现从对象模型映射到关系数据模型，对象关系映射引用了这项技术。
Object relational mapping refers to the technique of mapping the data representation from an object model to a relational data model with a SQL-based schema.
对象—关系映射技术允许您将关系数据库映射为对象。
The object relational mapping technology lets you map relational databases to objects.
我们在上文已简要提到，可以通过许多已知和经证实的技术来实现关系数据库平台的高可用性和伸缩性。
As we briefly mentioned above, ensuring the high availability and scalability of a relational database platform can be done through a number of known and proven techniques.
毕竟，现在使用关系数据库的API已经非常标准且成熟了—而且更重要的是，他们已经很熟悉这些技术了。
After all, the APIs for leveraging a relational database are by now fairly standard and well-thought-out - and perhaps more important, they are familiar.
即使关系数据库缺少解决方案所需的灵活性，与替代技术相比，它们仍然更成熟，更适合满足复杂的业务需求。
Even when relational databases lacked the flexibility required for a solution, they were still more mature and better suited for heavy demands than the alternatives.
压缩：因为XML数据和关系数据存储在一起，因此可以使用DB 29中引入的压缩技术对XML数据进行压缩。
Compression: As the XML data is stored along with the relational data, it can be compressed using compression technology introduced in DB2 9.
注意：尽管不同关系数据库厂商的XML物理存储技术可能不一样，但是逻辑视图是相似的。
Note: Even if the physical storage technology for XML might differ for different relational database vendors, the logical view is similar.
管理这样一个关系在概念上同现代关系数据库技术中的关系建模相似。
The ability to manage such a relationship is similar in concept to relationship modeling in modern relational database technology.
但是这并不表示，数据是更为传统的格式(比如关系数据库和电子表格)，这种技术就毫无用处。
This doesn't mean, though, that the technology has nothing to offer you if your data is in more traditional formats such as relational databases and spreadsheets.
使用关系数据库技术存储XML数据非常慢而且没有可伸缩性。
Using relational database technology to store XML data is slow and not scalable.
“纯”意味着以标注上类型的树的形式存储和处理XML文档，这与商业关系数据库中以前的任何技术都不同。
"Pure" means that XML documents are stored and processed as type-annotated trees, unlike any previous technology in commercial relational databases.
如果您只需要使用关系数据库，而不打算使用XML技术，那么只需忽略支持XML的列。
If you want to use a relational database without being bothered with XML technologies, you can just ignore the XML-aware columns.
这种技术通常需要自己编写自定义的应用程序逻辑从XML文档中提取数据，然后放到关系数据库的表列中。
Often the technology in question is custom application logic that you wrote yourself to extract data from an XML document and put it into a column on a table in a relational database.
它是一种牢固的且已证实的技术，允许架构设计师和开发人员利用现有关系数据库基础结构和现有的专门技术来产生数据库查询。
It is a solid, proven technology that allows architects and developers to leverage an existing relational database infrastructure and existing expertise in producing database queries.
提供这些技术的发布者还必须维护从底层初始数据源(通常是关系数据库中的数据)生成每种备选表示的代码。
A publisher offering these techniques must also maintain code that generates each alternative representation from the underlying original data source (often data in a relational database).
检查电磁式继电器的动作、返回值及返回系数应符合产品技术要求。
Check Electromagnetic relay operation, return value and return coefficient shall comply with product technology requirement.
在加入Iris之前，他是DigitalEquipmentCorporation的性能工程师，主要研究关系数据库和网络流协议等许多技术。
Before coming to Iris, he worked as a performance engineer for Digital Equipment Corporation, focusing on technologies ranging from relational databases to network streaming protocols.
为保证施工顺利进行，且提高安全性，对正反导井及扩挖系统进行了多项技术改进，提高了安全系数。
The some techniques of guide shaft and expansion excavation are improved for assure the successful construction and raise the safety coefficient.
IWA是一个令人振奋的突破，它将新的数据仓库技术和传统的Informix关系数据库服务器相结合，产生一种非常快的性能。
IWA is an exciting breakthrough-combining new data warehouse technology with traditional Informix relational database servers-that results in very fast performance.
数据存储和获取操作与使用关系数据库时相似，但完全是Google专有的技术。
Storage and retrieval from the data store are similar to using a relational database, but they're entirely proprietary to Google.
这种刷握的技术和结构己陈旧过时，技术中的不足是支架结构复杂摩擦系数大。
This brush holder of technology and structure has obsolete technology, lack of support structure is complex and the friction coefficient.
这种刷握的技术和结构己陈旧过时，技术中的不足是支架结构复杂摩擦系数大。
This brush holder of technology and structure has obsolete technology, lack of support structure is complex and the friction coefficient.
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