As part of this exercise, you will also learn about the EntityManager API for storing and retrieving data, rather than the simple map APIs.
作为本练习的一部分，您还将学习使用EntityManagerAPI存储和检索数据，而不是使用简单的map API。
Directory operations include storing new data in a directory, searching for and retrieving stored data, deleting unwanted data, updating obsolete data, and similar operations.
目录操作包括把新数据保存到目录，搜索和检索保存的数据，删除不需要的数据，更新过时数据，以及类似的操作。
Such a'radio' receiver would require far fewer and less complex structures than awarehouse capable of storing and retrieving a lifetime of data.
与一个存储及追忆一生数据的仓库来说，这个“收音机”只要求很少以及复杂度很低的组成结构。
Relational database management systems (RDBMS) are good at storing and retrieving structured data.
关系数据库管理系统（Relational database management systems，RDBMS）适合于存储和检索结构化数据。
Because the web service does the work of retrieving the stock ticker data and storing it in a simple data structure, I only needed to convert that data to RDF.
由于web服务完成了检索股票数据并存储在一个简单的数据结构中，所以我只需要将数据转换成rdf。
Because the simplified PetStore requirements are limited to retrieving the data from, and storing it to, the database, the only collaborators are DAOs.
因为简化的PetStore要求被限定于从数据库检索数据并把数据存储于数据库，惟一的协作者就是DAO。
The Flash API for storing and retrieving local data is known as a SharedObject.
用于存储和检索本地数据的FlashAPI是SharedObject。
BigTable is now used by over sixty Google products and projects as the platform for storing and retrieving structured data.
目前，BigTable正在为Google六十多种产品和项目提供存储和结构化数据获取的支撑平台。
Functionality for extracting metadata from resources, storing these metadata in long-term archives, as well as versioning and retrieving data.
这是用于从资源中提取元数据的功能，然后把这些元数据存储在长期的存档中，并且对数据进行设置版本和存取。
BPEL Repository enables a mechanism for storing any XML data and retrieving this data through an object-oriented querying mechanism.
BPELRepository提供了一个通过面向对象的查询机制来存储任何XML数据并进行检索的机制。
Data recording, storing and retrieving has also been greatly improved by computers.
计算机也大大地改进了数据的记录、存储和检索。
Client application services also support occasional connectivity by storing and retrieving user information from a local data cache when the application is offline.
通过在应用程序脱机时存储和检索本地数据缓存中的用户信息，客户端应用程序服务还支持偶尔连接。
The mechanism for storing and retrieving personalization data consists of a provider component and a data store.
储存和撷取个人化资料的机制由提供者元件和资料存放区组成。
A powerful set of tools for collecting, storing, retrieving at will, transforming and displaying spatial data from the real world.
强大的工具集合，能从真实世界中按照意愿采集、存储、提取空间数据，并转换和显示它们。
A key is a text string which should uniquely identify the data for clients that are interested in storing and retrieving it.
键值是一个文本字符串，对于需要存取这项数据的客户端而言，它必须是唯一的。
A key is a text string which should uniquely identify the data for clients that are interested in storing and retrieving it.
键值是一个文本字符串，对于需要存取这项数据的客户端而言，它必须是唯一的。
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