Defines the field types and fields of documents.
定义文档中的索引域(field)和索引域类型。
The other field types are not shown from the drop-down list of field selections.
其他字段类型不显示在字段选择的下拉列表中。
It can act like any of the previous field types, but cannot be linked to the XForms data model.
它的行为类似于前面的任何一种字段类型，但是它并不链接到XForms数据模型。
Relational databases that store XML data usually use Binary Large Object (BLOB) field types to store XML.
存储XML数据的关系数据库通常使用大型二进制对象(BLOB)字段类型存储XML。
The Style property of the TComboBox is set to DropDownList, and the Items list if filled with the possible field types I mentioned earlier.
TComboBox的样式属性被设为DropDownList，Items列表填充了前面提到的可能字段类型。
Shows how to customize the appearance and behavior of data field types that are not defined in the database schema.
说明如何自订资料库结构描述中所未定义之资料栏位类型的外观与行为。
The field types, options, default values, field orders, and so on are defined by the user to attach a custom form of data elements to the document.
字段类型、选项、默认值和字段顺序等都由用户定义，从而为文档添加定制的数据元素。
If fields of arbitrary types need to be selected and the field types are not known in advance, dynamically build a row structure with fields of the needed types.
如果需要选择任意类型的字段，而且无法提前知道字段类型，就要动态地构建一个包含所需类型的字段的行结构。
The field types supported are: primitives (int, string, etc), Date, Timestamp, as well as objects composed of primitives, hashmaps, and collections (non-generic) of objects.
支持的字段类型：原生类型(int、string等)、Date、Timestamp、以及原生类型的组合类型、hashmap、对象集合(非范型)。
Right after the TClientDataSet is activated, you can again walk through the set of field definitions; this time not only to obtain the field names, but also the field types.
在激活tclientdataset之后，您可以再次遍历字段定义集；只是这次不但要获得字段名，还要获得字段类型。
To cover all kinds of data that a site administrator might need, Drupal's field system gives users a selection of basic field types and provides an API so that modules can define new field types.
为了涵盖站点管理员可能需要的所有类型的数据，Drupal的字段系统允许用户选择基本的字段类型，并提供了一个API，让模块能够定义新的字段类型。
To cover all kinds of data that a site administrator might need, Drupal's field system gives users a selection of basic field types and provides an API so that modules can define new field types.
为了涵盖站点管理员可能需要的所有类型的数据，Drupal的字段系统允许用户选择基本的字段类型，并提供了一个API，让模块能够定义新的字段类型。
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