Querying a local database can be a slow process, especially if you have many rows of data or you need to start running complex queries that join multiple tables.
查询本地数据库是一个比较慢的过程，特别是，如果您有多行数据或者您需要在多个表之间运行复杂的查询语句。
XAPI covers storage, retrieval, modification, and querying of data in an XML database, with support for transaction management.
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。
RPC runtime provides inquiry routines for elements, groups, profiles and towers, which are accomplished by querying or accessing the name service database.
RPC运行时为元素、组、概要和塔提供查询例程，这通过查询或访问名称服务数据库来完成。
Important functions in this module are connecting to a database, querying the database, and giving out results of the query.
该模块中的重要函数有：连接数据库的函数、查询数据库的函数以及提供查询结果的函数。
The syntax for OQL is similar to that of SQL but it lets you query the object model rather than directly querying the database.
OQL的语法类似于SQL的语法，但它却使您能够查询对象模型，而不是直接查询数据库。
It also demonstrates how querying the XML data in the database is no different from querying the data in the application.
还演示如何按照在应用程序中查询数据的相同方式查询数据库中的XML数据。
The index is created by querying the database for the list of unique categories and brands for all the products in the database.
索引通过查询数据库中所有产品的惟一种类和品牌的列表而创建。
The current draft spec from the working group includes definitions for a Database object for accessing and querying a local data store.
该草案当前版本包含了对访问数据库对象和查询本地数据存储的定义。
The fact that there is no associated connection tells pureQuery that you are querying in-memory data and not data stored in a database.
没有关联的连接这一事实告诉pureQuery要查询内存中的数据，而不是存储在数据库中的数据。
This article covers the use of Clojure for performing basic CouchDB operations, querying CouchDB using views, and database replication.
本文涵盖了使用Clojure执行基本CouchDB操作，通过视图查询以及数据库复制。
In the last article in this series, I talked about the difference between querying an RDBMS and querying an object database like db4o.
在本系列的上一篇文章中，我谈到了查询rdbms与查询像db4o这样的对象数据库的不同之处。
This two-part article series takes a different approach to authentication, which is accomplished by querying Geronimo's built-in Derby database.
这份两部分构成的文章系列采用了另外一种方式进行认证，它是通过查询Geronimo内置的 Derby 数据库实现的。
Use a database profiling tool to see what indexes are being used when querying, and that entire tables are not being locked when doing updates.
使用数据库明细（databaseprofiling）工具来查看在查询的时候使用了什么索引，在更新的时候整个表没有被上锁。
A Web application that makes use of a Derby database for storing and querying data.
使用Derby数据库存储和查询数据的Web应用程序。
In short it aims to model your entire database schema dynamically, querying its information schema and eliminating the need for object-relational mapping in your application code.
简单来说，它是用来为你的全部数据库schema动态建模的，并可查询它的信息schema、消除应用程序中的面向关系映射。
Although XQuery is well known for its database querying capabilities, you do not need a database for XQuery to be powerful.
尽管XQuery因其数据库查询功能而闻名，但要发挥XQuery的威力并不需要一个数据库。
Universal Services are a simple but fixed set of database operations that allow the querying and modification of XML data, stored in a pureXML column of a DB2 database.
UniversalServices是一组简单但固定的数据库操作，它们允许查询和修改储存在DB 2数据库的purexml列中的数据。
Database query optimization for some of the APIs' operations like querying business process and task related objects (usage of materialized views or stored queries) (see the Resources section).
针对某些API操作(如查询与业务流程和任务相关的对象)的数据库查询优化(使用物化视图或存储查询)(请参见参考资料部分)。
Snippets are little fragments of code that perform small tasks, such as running a regular expression on some input, connecting to the database, and querying the database.
片段是完成小任务(比如在一些输入中运行常规表达式、连接到数据库和查询数据库)的小部分代码。
The application was using an SQL database for querying and updating profiles.
应用程序使用SQL数据库查询和更新配置文件。
The querying functions are capable of coping with the standard database transactions for creating, reading, updating, and deleting data (known as CRUD operations).
查询函数能够处理标准化数据库事务，以便创建、读取、更新和删除数据(通称CRUD操作)。
All actions, from querying the database to creating or changing data in it, are performed via a REST-based API.
所有操作—从查询数据库到创建或更改数据库中的数据—都通过一个基于REST的API执行。
Two common operations that occur frequently are querying based on search parameters and database-level pagination.
常见的两种通用操作是根据搜索参数执行查询和数据库级的分页。
In a real-world application, the server may be busy querying a database, computing a route, or performing some similar task that takes a while to complete.
在一个现实的应用软件中，这个服务器可能会忙于询问一个数据库，处理一个路由，或者执行一些类似需要消耗一些时间来完成的工作。
SQL statements should be used only as a last resort, if no other method of querying the database will work.
SQL语句的方式应该是您选择的最后一种方式，如果上面几种方法不适合您的话。
The database schema for some of the tables has been simplified as you no longer need to shred out data for querying purposes.
由于不再需要为了进行查询而分解数据，一些表的数据库模式已经简化了。
But, while this application had no formal data model, maybe we could "borrow one" by streaming the data into an in-memory database and querying against that.
但是，虽然这个应用程序缺少正式数据模型，但也许我们可以将数据存储到内存中的数据库，并凭借该数据库进行查询，通过这种方式借用一个数据模型。
The raw metadata structures are stored in an SQL-like database for easy querying.
初始的元数据结构储存在一个类似于SQL的数据库中，用于简单的检索。
You can roll out more computers that support your service, site and queries, but eventually they are all querying your database, and if that's not designed right it becomes a bottleneck.
你可以使用更多服务器，但最终他们还是要访问你的数据库，如果设计不合理的话，这会成为一个瓶颈问题。
But unlike most wrapping frameworks, Rails can discover the features of the object model by querying the database table.
与大多数包装框架不同，Rails能通过查询数据库表发现对象模型的特征。
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