在先前的文章中，您了解了数据库连接和查询结果的jdbc元数据支持。
In previous articles, you learned about JDBC metadata support for both the database connection and the query results.
XAPI涵盖了XML数据库中数据的存储、检索、修改和查询，以及对事务管理的支持。
XAPI covers storage, retrieval, modification, and querying of data in an XML database, with support for transaction management.
它提供了很多面向应用程序开发人员的新特性、分层数据结构支持和改进的跨多个数据库实例的查询能力。
It offers many new features for application developers, hierarchical data structure support, and improved query capabilities across multiple instances of the database.
IDS支持XML发布函数，这些函数可以将SQL查询的结果转换为XML，以便在XML应用程序甚至异构的数据库环境中使用。
IDS supports XML publishing functions to transform the results of an SQL query to XML for use in XML applications and even in heterogeneous database environment.
信息服务支持组件提供的功能还可以帮助将服务接口映射为访问整合数据库中的数据的查询。
Functionality of the information service enablement component can also help to map a service interface to a query that accesses the data in the consolidated database.
如果要监视的数据库系统是用于决策支持(DSS)的，查询比较长而且比较复杂，那么不要让质量控制(QC)代理运行大型的查询。
If the database system you are monitoring is for decision support (DSS), and the queries are long and complicated, don't have the quality control (QC) agent run a large query.
许多用户使用数据库的影子副本(图4)支持基于操作数据的大型专用查询。
Many users employ a shadow copy of their database (Figure 4) to support large and ad-hoc queries against the operational data.
OLTP环境指的是使用和支持面向事务的工作负载的数据库环境，它一般由许多数据实体和查询操作组成。
An OLTP environment is a database environment that facilitates and supports transaction-oriented workloads, which typically consist of numerous data entry and retrieval operations.
这两个数据库系统都支持主键，以及支持加速查询和约束输入的键索引。
The two database systems support primary keys, along with key indices that allow you to speed up queries and constrain input.
其中少数(如智能查询改写)可用于没有数据库支持的工具。
A few of these (smart query rewriting, for example) are available to tools that aren't backed by a database.
使用数据库支持的函数作为查询表达式来扩展语法。
Using a database-supported function as a query expression to extend the grammar.
在这个例子中，您的目标数据库是MySQL，它恰好支持用查询发现状态信息这一概念。
Your target database is in this case MySQL, which just so happens to support the notion of discovering status information with a query. The status information you're interested in is as follows
与多数数据库应用程序不同，XPath不支持参数化查询的概念，但是您可以使用其他API(比如XQuery)模拟该概念。
Unlike most database applications, XPath does not support the concept of parameterized queries, but you can mimic the concept using other APIs such as XQuery.
如同在关系数据库中一样，WebSphereeXtremeScale支持使用索引提高查询速度。
Just as in a relational database, WebSphere eXtreme Scale supports the use of indices to improve the speed of queries.
系统应支持1000个并发用户同时查询数据库，而不会发生拥塞或数据丢失。
The system shall support 1,000 simultaneous users, all doing queries against the database at the same time, without crashing or losing data.
建立一个到支持数据库的连接，提供一些访问方法来查询和更新数据库。
Establishes a connection with the support database and provides access methods to query and update the database.
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。
This prepares the database for use by a GIS and for spatial business logic implemented in SQL, including distance-based queries.
例如，如果您的数据库用于事务处理和繁重的决策支持(DSS)查询，则可以确定非预定的DSS查询将牺牲您的事务性能。
For example, if your database is used for transaction processing and heavy decision-support (DSS) queries, you can be sure that a non-scheduled DSS query will trash your transaction performance.
查询功能是产品的一个便捷特性，但它不受高端数据库中所有高级查询优化器的支持。
The query functionality is a valid convenience feature of the product, but it is not backed by all the sophisticated query optimizers found in top-end databases.
例如，您可以根据您的数据库设计、媒体的访问时间、或支持的特定设备的CPU速度来修改查询计划。
For example, you can refine the query plan based on your database design, access time of the media, or CPU speed for your specific supported devices.
WebSphereInformation Integrator不支持在分区数据库环境中引用昵称的系统管理的物化查询表。
WebSphere Information Integrator does not support system-maintained materialized query tables that reference nicknames in a partitioned database environment.
系统采用数据库支持，确保优异的查询、检索、备份性能。
The system USES the database support to ensure that merit inquiry, retrieval, backup performance.
此类操作(由恰当的关系理论作为支持)是数据库查询优化器的核心所在。
Manipulations like this (backed by the proper relational theory) are at the heart of database query optimizers. The resulting tree is shown in Figure 2.
由于跨数据库查询不被支持，所以跨多个数据库的分区是个棘手的问题，任何union或join操作都需要在内存中完成。
Partitioning across multiple databases wouldn’t be a big deal if it were not for the fact that cross-database queries are not supported, forcing any unions or joins to be done in memory.
本文提出了一种有效的支持海量图像数据库Q BE查询的聚类索引算法。
This paper proposes an indexing algorithm of clustering which supports QBE image retrieval for large image databases.
一个SQL数据库提供了选择的事务提交，不提供支持的过程本身复杂的查询和关系的例子。
SQL database affords options for transactional commits, complex queries and relational support which aren't provided of course of ehCache by itself.
这就对数据库管理系统提出了挑战，即如何有效地存储和管理海量数据并高效的支持上层的查询。
This is a great challenge to DBMS, because it has to store and manage the massive data efficiently and support SQL queries more effectively.
MSFRP实现从特征层到语义层的多媒体数据检索，有效支持多媒体数据库的复杂查询应用。
MSFRP realizes multimedia data retrieving from character layer to semantic layer and supports sophisticated inquiry application of multimedia database efficiently.
一个SQL数据库提供了选择的事务提交，不提供支持的过程本身复杂的查询和关系的例子。
A SQL database affords options for transactional commits, complex queries and relational support which aren't provided of course of ehCache by itself.
同时，数据库还支持部分标准的在线数据查询，手机动态密码登陆，在线全文阅读、全文搜索等多种功能。
Meanwhile, database support online data query with part of the standard in database, login by mobile dynamic password, online full text reading, full-text search and other functions.
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