首先，对于清单2中的数据，我需要模拟出一个描述，记录下对于这些数据我可能要说的内容。
First, I need to mock up a description of what I might want to say about the data in Listing 2.
如果你的数据库包含敏感信息，您可能希望限制对编目视图的访问，因为编目描述了数据库中的每一个对象。
If your database contains sensitive data, you might want to limit access to the catalog views, because the catalog describes every object in the database.
看一下DataProject Explorer窗口中的HOME . ldm以及描述这个数据库的表和数据。
Look at HOME.ldm within the data Project Explorer window and the tables and data that describes this database.
元数据(或数据的描述)。
这次的XML不是基于数据显示，而是考虑一种用于描述数据的结构。
Instead of basing XML on the presentation of data, consider a structure that describes the data.
描述与一个数据元素相关联的数据的主要类别。
Describe the major classification of data associated with a data element.
技术元数据包括主机服务器、数据库类型、数据库模式、表名、列名和数据类型，这些都是在技术数据中描述的。
Technical metadata includes host server, database type, database schemas, table name, column names, and data types, all of which are described in technical detail.
属性应当用来描述如何解释数据元素，或描述关于数据元素的信息—换句话说，属性是一种元数据。
Attributes should be used to describe how to interpret data elements, or describe something about them — in other words, attributes are a form of metadata.
设置代码通常由一些行构成，这些行是对数据库的描述，比如数据库驱动程序、用户名和密码，以及到哪里去找到它。
The setup code is usually a few lines that describe the database such as the database driver, username and password, and where to find it.
它描述了服务的接口，包括数据类型和数据结构。
This describes the interfaces of the service, including data types and data structures.
描述批量数据存储中的每个数据元素，例如源组织、应用程序支持、数据汇总、索引、目录或摘要。
Describes each data element within the bulk data store, such as source organization, application support, data summary, index, catalog, or digests.
按照前面描述的那样在元数据对象中指定筛选条件，可以限制返回到SDO 的数据量。
You can limit the amount of data returned to the SDO by specifying filters in the meta data objects as described earlier.
数据仓库基础设施计划描述了软件、硬件、数据网络以及其他支持数据仓库的元素。
The data warehouse infrastructure plan describes the software, hardware, data network, and other elements that will support the data warehouse.
对于分布式的主机环境，您可以使用相同的数据描述，这大大减少了开销，提高了数据的一致性和完整性。
You can use the same data descriptions for distributed and host environments, which reduces overhead and improves data consistency and integrity.
元数据是通过类型和属性进行描述的，数据工厂可提供完整的描述。
The metadata is described in terms of types and properties, and a complete description is held by a data factory.
而且，它出现在一个适当的时机——科学家们拥有的数据远远多于理论所不能描述的数据。
And it comes at an opportune moment - scientists have vastly more data than theories to describe it.
存储的数据还有相关联的元数据，元数据用于描述对象。
The stored data also has associated metadata for describing the object.
数据访问服务遵循相应的API描述，因此第三方可以为任何数据源编写自己的数据访问服务。
The data Access Service follows an API description such that third parties can write their own data Access Services to any data source.
因此，如果给定要收集数据的描述(例如XML文档)以及数据的emf模型，那么几乎立即就可以生成丰富的工作表单。
Therefore, given a description of data to be collected (such as an XML document) and an EMF model of that data, it is possible to generate rich, working forms almost immediately.
在数据库的上下文中，元数据描述特定的数据库，比如数据库的名称、它的版本号或建立连接的JDBC驱动程序的名称。
In the context of a database, metadata describes that particular database, such as the name of the database, its version number, or the name of the JDBC driver making the connection.
这是类型和属性的框架，提供了一组数据必须满足的规则，并可通过从其他数据元素描述其路径来访问数据元素。
This is a framework of types and properties that provides a set of rules to which the data must conform and a means of accessing a data element by describing its path from another data element.
他们就是用数据和数据之间的关系来认识、描述世界的，因此会首先去寻找类中的数据-一般没有什么标准的方法去寻找类的函数或功能。
They see the world in terms of data, and data relationships, and tend to populate their classes first with data -- usually with no strategy on how to assign operations (i.e., functions) to the class.
对于姓名、地址和产品描述等文本数据，查看可变的数据格式是识别包含多个域的字段的关键。
For text data such as name, address, and product descriptions, a review of the varying data formats is critical to identify fields containing multiple domains.
除了保存的用户数据以外，DB 2数据库还有大量的内部元数据，这些数据描述了用户数据存放位置、用户数据属于谁，以及如何引用它们。
In addition to the user data it stores, a DB2 database has a great deal of internal metadata that describes where all of that user data can be found, who it belongs to, and how it is referenced.
多维数据集模型包含元数据对象，这些对象描述基表数据中的关系以及相关数据位于什么地方。
A cube model contains metadata objects that describe relationships within the data that resides in the base tables and also describes where pertinent data is located.
访问或技术名称描述物理数据库中的数据对象。
An access or technical name describes a data object as represented in a physical database.
数据模型描述数据元素的结构。
简言之，DTD描述了词汇表的结构（标记和属性），类似于数据库模式描述数据库的结构（表和列）。
Essentially a DTD describes the vocabulary's structure (the tags and attributes), similar to the way a database schema describes a database's structure (the tables and columns).
RAS 可以为以下内容定义格式：描述性元数据、分类元数据、资产的用法元数据，以及内容的布局和内容元数据。
The RAS defines a format for the descriptive metadata, the classification metadata, and the usage metadata of an asset, as well as a layout for the content and the content's metadata.
WSDL文件只是描述数据类型，包括数据类型的名字、操作和功能等，但并没有描述数据类型的意义。
A WSDL file only describes the data types, as well as the name of data types and the operations or functions and so on, but does not describe the meaning of the data type.
应用推荐