Weather gadget weather query operations can be performed.
说明：天气预报小工具，可以进行天气预报查询操作。
Disaster information to achieve the increase, modify, delete, and query operations.
完成灾祸根本信息的添加、修正、删除以及查询等操作。
The metadata browser shows only the Salesforce objects on which users can perform query operations.
元数据浏览器只显示用户可以对其执行查询操作的Salesforce对象。
Entity set access control and validation is enabled through query operations by using query composition.
实体集访问控制和验证是使用查询撰写通过查询操作实现的。
The upcoming section demonstrates how to perform query operations on this XML data using our Team Room application.
后面一节演示如何使用TeamRoom应用程序对这个XML数据执行查询操作。
Secondly, it removes the need for error-prone type casts. (a problem more common with query operations than CRUDs.)
其次，它消除了易出错的类型强制转换的需要(这是一个在查询操作中比在CRUD中更常见的问题)。
Very simple database code along with the report, the function is to use SQL statements to complete the query operations.
说明：非常简单的数据库代码并附上报告，实现的功能是用SQL语句完成整个查询操作。
As stated earlier, we used direct JDBC calls for our complex query operations to avoid the performance overhead in EJB2 query.
如前所述，对于复杂的查询操作，我们使用了直接JDBC调用，从而避免EJB 2查询中的性能开销。
SearchStats: Query operations, searcher performance and parsing times, method calls statistics, and most commonly executed queries.
搜索统计数据：查询操作、搜索器性能和处理时间、方法调用统计、以及对大多常用执行的查询。
Figure 3 is an architectural view of the persistence mechanism for query operations which use direct JDBC calls in WebSphere Customer Center.
图3是用于查询操作的持久性机制的架构视图，该机制使用WebSphereCustomer Center中的JDBC调用。
In order to support data structures like hash tables and query operations like grouping, anonymous types created by LINQ must provide stable hash codes.
为了支持类似哈希表的数据结构和像分组这样的查询操作，由LINQ创建的匿名类型必须提供稳定的哈希码。
ODBC is a standard, well established protocol that permits applications to connect external database servers or files, and perform query operations.
ODBC是一个允许应用程序连接外部数据库服务器和文件、并执行查询操作的标准协议。
You might not know the workload of your data warehouse in advance, so a data warehouse should be optimized to perform well for a wide variety of possible query operations.
你也许不能事先知道数据仓库的工作量，所以一个数据仓库需要被优化使在面对多种可能性的查询操作时依然能运行良好。
Set operations in LINQ refer to query operations that produce a result set that is based on the presence or absence of equivalent elements within the same or separate collections (or sets).
LINQ中的集合作业指的是让查询作业根据同一集合或不同集合内是否有对等项目来传回结果集。
Because of performance problems using EJB2 queries, we decided a long time ago to use direct JDBC calls for query operations and EJB2 CMP for create, retrieve, update, and delete (CRUD) operations.
由于使用e JB 2查询存在性能问题，我们很早就决定对于查询操作使用直接JDBC调用，而对于创建、检索、更新和删除(CRUD)操作则使用EJB2CMP。
Note that this setting will affect all operations that query for related elements, for instance queries on Browse diagrams and Topic diagrams.
值得注意的是，这样的设置会影响到查询相关元素的所有操作，例如浏览图和主题图的查询。
These operations work together to form a series of computations from source data to produce the result of a query.
这些操作共同构成了从源数据开始的一系列计算，最终得到查询结果。
Functions and operations that cannot be pushed down can greatly impact query performance.
不能下推的函数和操作会大大影响查询的性能。
These operations can include sending a query to retrieve results, updating remote data, supporting transactions, manipulating large objects, binding input values, and more.
这些操作可以包括发送一条查询来获取结果，更新远程数据，支持事务，操纵大型对象，绑定输入值，等等。
There is also plenty of advice on why certain operations may indicate problems with the query or table design.
与此同时，本章还就为何某些操作可能会引起查询或表设计上的一些问题给出了很多建议。
Figure 4 shows a plan using the nested loop join operations at the federated server to evaluate this query.
图4展示了一个在联邦服务器使用嵌套循环连接操作符来计算这个查询的计划。
CRUD operations and a query language are provided.
它提供了CRUD操作和一种查询语言。
According to the overall query execution plan, the sub operations are then applied at the sources.
根据总体查询执行计划，将随后对数据源执行各个子操作。
Before we describe the different types of queries and operations that you can perform on your federated system, we would like to first provide an overview of how a distributed query is processed.
在描述对联邦系统执行的不同类型的查询和操作之前，我们首先对分布式查询的处理过程作一个概述。
Table 1 lists and provides examples of the basic SQL Boolean operations that you can use in a query.
表1列出并提供了可以用于查询中的基本sql布尔操作的示例。
Relational databases use Structured Query Language (SQL) to pull information from multiple tables and columns, but key-value stores are limited to operations on the key column.
关系数据库使用结构化查询语言(Structured Query Language,SQL)以便从多个表和列中提取信息，但是键值存储仅限于对键列的操作。
Query after removing useless join operations.
删除无用的连接操作之后的查询。
We discovered that there is a point where aggregate index costs—more-expensive INSERT and DELETE operations, for example—outweigh a new index's query speed-up benefit.
我发现有一个聚合索引成本的点 —例如，更为昂贵的INSERT和DELETE操作 —超出一个新索引的查询加速所能带来的效益。
For a federated query to benefit from asynchrony the operations (queries) pushed down and executed asynchronously on the remote data source (s) must have the following properties.
联邦查询要从异步中获益，下推到远程数据源并在远程数据源上异步执行的操作(查询)必须有以下特征。
For a federated query to benefit from asynchrony the operations (queries) pushed down and executed asynchronously on the remote data source (s) must have the following properties.
联邦查询要从异步中获益，下推到远程数据源并在远程数据源上异步执行的操作(查询)必须有以下特征。
应用推荐