Unified access to distributed heterogeneous data sources
对异构型分布数据源的统一访问
Describe techniques for extracting from heterogeneous data sources.
简述异构数据源中的数据抽取技术。
Advanced data and query federation across heterogeneous data sources.
跨异构数据源的高级数据和查询联合。
So, the needs for the integration of heterogeneous data sources will be urgent and last long.
因此，对异构信息源集成的要求是非常迫切并会长期存在下去。
There exist both schema and context heterogeneity between distributed, heterogeneous data sources.
在分布异构的数据源之间不仅存在模式异构，而且存在上下文异构。
The purpose of data integration is providing a standard interface for visiting heterogeneous data sources.
异构数据集成系统的目的是提供一个访问异构数据源的统一接口。
Ontology plays an important role in solving the problem of semantic heterogeneity of heterogeneous data sources.
本体可以很好地解决异质数据源的语义异构问题。
Security: This is the entry point for applications to access heterogeneous data sources based on who-can-see-what policies.
安全性（Security）：这是应用程序访问基于 who-can-see-what 策略的不同种类数据源的入口点。
It profiles, cleanses, and transforms data from heterogeneous data sources to deliver consistent and accurate business data.
它概括、清理和转换来自异构数据源的数据，以生成一致的、精确的商业数据。
With the rapid developments of database and network technology, a large number of heterogeneous data sources come into being.
随着数据库和网络技术的飞速发展，大量的异构数据源应运而生。
XML, as the media of the data exchange between the heterogeneous data sources, to be imported into the database is one of the key technologies.
在使用XML作为异构数据源数据交换中介的过程中，如何将数据从XML文件中转入到数据库中是关键技术之一。
Service data Objects (SDO) 2.1 is a data programming architecture and an API that provides uniform access to data across heterogeneous data sources.
ServiceDataObjects (SDO) 2.1是一种数据编程体系结构和API，可提供对异类数据源的统一数据访问。
The information integration of IT systems in power plants involves many heterogeneous data sources, and has the demand for real-time information query.
文章认为发电厂IT系统的信息集成涉及许多异构的数据源，并且有不同程度的实时信息查询的需求。
A federated system is created by installing Information Integrator on a DB2 UDB engine and configuring it to register one or more heterogeneous data sources.
联邦系统的创建方式是，在DB 2udb引擎上安装Information Integrator，然后对其进行配置以注册一个或多个异构数据源。
Main functions of data access middleware are location transparency, distributed data query, transaction process and heterogeneous data sources compatibility.
数据服务中间件的主要功能包括数据的位置透明性、分布式数据查询、事务处理、异构数据源兼容。
As the increasing requirements of comprehensive information utilization, it is an urgent need to address integration issues on these heterogeneous data sources.
随着对信息综合利用需求的进一步提高，人们迫切希望解决这些异构数据源的集成问题。
Finally, many firms need to populate their data warehouses with data from heterogeneous data sources, and DataStage provides critical services to help them do so.
最后，许多公司需要使用来自异类数据源的数据填充数据仓库，而DataStage提供的关键服务能够帮助它们完成该任务。
For example, IBM InfoSphere information Server enables federating heterogeneous data sources to support complex queries for information, as well as cleansing data.
例如，IBMInfoSphere InformationServer允许联合异构数据源以支持复杂的信息查询以及数据清理。
Some examples of common middle tiers include application servers (for hosting applications) and federation servers (for transparent access to heterogeneous data sources).
通用中间层的一些示例有：应用服务器(用于包含应用程序)、联合服务器(用于透明地访问异构数据源)。
Single API for data: In addition to the optimistic concurrency support, another major benefit to using SDO is realized when working with multiple heterogeneous data sources.
数据的单一API：除了开放式并发的支持外，在处理多个异构数据源时，您会认识到使用SDO 的另一个主要好处。
As mentioned, the focus of SDO is on providing a flexible data object representation for data from heterogeneous data sources and built-in support for optimistic concurrency.
刚才已提到，SDO的重点是为异构数据源中数据提供一个灵活的数据对象表示，并为开放式并发提供内置支持。
Thus, how to integrate heterogeneous data sources based on XML representation so as to achieve efficient information query has become the key problem needed to solve urgently.
因此，如何集成基于XML表示的异构数据源，实现有效的信息查询，成了一个亟待解决的问题。
At last, the study has established an interface specification between relational schema and XML schema initially, unified the mode of operation among heterogeneous data sources.
初步建立起一种关系模式到XML模式的接口规范，实现异质数据源模式的统一操作。
The article expatiates on a method of establishing heterogeneous data sources to connect the information model and the metadata mapping model by using the XML DTD modeling technique.
本文论述了使用XMLDTD建模技术，分别建立各个异构数据源连接信息模型与元数据映射模型的方法。
Combined with enterprise information integration technology. this article advanced a standard integration of heterogeneous data sources that called virtual database model based on XML.
本文结合当前企业信息集成技术，提出了一种统一的异构数据源集成模型——基于XML的虚拟数据库模型。
The migration of heterogeneous data sources, which can exploit information resources effectively and realize data sharing, is one of the vexed points in the current data processing field.
异构数据源的移植问题是当前数据处理领域内研究的一个热点，通过数据移植能有效地利用信息资源、实现数据共享。
The migration of heterogeneous data sources, which can exploit information resources effectively and realize data sharing, is one of the vexed points in the current data processing field.
异构数据源的移植问题是当前数据处理领域内研究的一个热点，通过数据移植能有效地利用信息资源、实现数据共享。
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