默认情况下，该类为空，因为Rails将根据来自数据库的表元数据推断该类的属性。
The class is empty by default, as Rails infers the attributes of the class based on table metadata from the database.
通过属性表定义元数据。
创建“现有表”时，首先会创建一个代理表，然后检索和存储远程表中的元数据，并将该元数据放入到这个代理表中。
Creating an "existing table" creates a proxy table, then retrieves and stores metadata from a remote table and places the metadata into the proxy table.
通过分析XML文件，我们知道它包含了有关表和列(我们从中抓取数据)的结构和数据本身的元数据。
By analyzing the XML file, you should see that it includes metadata about the structure of the table and columns we grabbed our data from as well as our data.
有时候，已经存在一个bean类，其中包含所有需要的关系映射元数据，但是这个类所映射的底层物理表却丢失了。
There are also instances when a given bean class with all the required relational mapping meta-data exists, but the underlying physical tables to which it is mapped are missing.
在导入表和存储过程并调整了数据库对象的元数据后，就可以为此项目创建一个包并将其发布到CognosContentStore。
After importing the tables and the stored procedure and adjusting the meta data for those database objects, you can create a package for the project and publish it to the Cognos Content store.
这块表差不多花了我20元。
一个骗子卖给她一只不走的表，骗走了一百元。
A swindler cheated her of one hundred dollars by selling her a watch which did not work.
谢谢您。您现在可以放回去了。(她在称上称包裹)1公斤。(她在价目表上查重量)81.5元。
Thank you. You can put the silk back in now. (She weighs the parcel on the scales) It's 1 kilogram. (She checks the weight against a price list) It's 81.5 yuan.
根据价格表，他们花了45元买门票。
According to the price list, they paid 45 yuan for the tickets.
有些人认为词汇表和分类法也属于元数据的范畴。
Some people consider glossary and taxonomy as metadata as well.
该提取请求包含关于选择的源数据库表的元数据。
The extract request contains the metadata about the selected source database tables.
使用SQL从一组标准系统表查询元数据的功能
The ability to use SQL to query metadata from a standard set of system tables
表4：rup元模型的分等级表示。
清单1代表Trails视图的元数据。
除了使用查询表提取额外元数据之外，还可以使用其他技术让表单与其他用户界面开发标准保持一致。
In addition to using lookup tables to extract additional metadata, other techniques can be used to make the form consistent with other user interface development standards.
关键词搜索可在不同的参数(比如文档类型、类别、用户和通过属性表定义的定制元数据)上执行。
The keyword search can be executed on different parameters such as document type, categories, user, and custom metadata defined through the property sheet.
这个用户 id用于连接到QApply元数据表。
This userid is used to connect to the QApply metadata tables.
元数据表control-table 的创建过程是自动的。
The metadata table control-table creation processes are automated.
定制元数据来自文档类型的属性表。
Custom metadata comes from the property sheet of the document type.
交易过程很快，我付了35元钱后就拿着表离开了。
The transaction went quickly; I offered 35 yuan and left with the watch.
如何在注册表内部和外部定义和管理服务元数据？
How is service metadata defined and managed within and outside of the registry?
服务注册表提供服务的注册、元数据的管理和自动化服务。
A service registry provides registration of services, management of metadata and automation services. This layer is evaluated based on answers from the following questionnaire.
因为刚刚导入了关于目标数据仓库表的DB 2元数据，可以在这里开始处理DB 2 Connector阶段。
Because you just imported DB2 metadata about the target data warehouse table, this is a convenient point to work on the DB2 Connector stage.
这个表空间用来容纳 ADMIN_COPY_SCHEMA过程所使用的元数据以及这个过程返回的错误表。
This table space is used to hold metadata used by the ADMIN_COPY_SCHEMA procedure as well as error tables returned by this procedure.
使用Ruby反射和元编程的组合，表的列可以变成对象的属性。
Using a combination of Ruby reflection and metaprogramming, the columns of the table become properties of the object.
可以使用属性表和文档模板，来定义定制的元数据和创建模板。
Custom metadata definition and template creation are possible using property sheets and document templates.
Metabroker status窗口将为您提供将整个术语表模型导出到元数据服务器中的选项，也可以筛选需要导出的内容。
The Metabroker status window provides you with the options to export the entire Glossary Model into the Metadata Server, or you can filter what you want to export.
您将看到一个三元素表 {Target,Type,Value}，该表确定了消息中设置了哪些元素以及这些元素的值。
You'll see a table of {Target, Type, Value} triples that determine what elements in the message get set and to what value.
物理数据模型的生成也保留术语表分类，准备好发布到元数据服务器。
Generation to physical data model also retains glossary classifications, ready for publication to metadata server.
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