Field Element for EventClass/Schema (ADF)
Provides a location for defining one event class field.
Синтаксис
<EventClasses>
<EventClass>
...
<Schema>
<Field>
Element Characteristics
Characteristic | Description |
---|---|
Data type |
None. |
Default value |
None. |
Occurrence |
Required once or more per Schema element. |
Updates |
Can be added and deleted when updating the application. |
Element Relationships
Relationship | Elements |
---|---|
Parent element |
|
Child elements |
FieldName Element for EventClass/Schema/Field (ADF) |
Замечания
The Field element contains the field name, field type, and field type modifiers used when creating the event class table in the database.
Важно! |
---|
If you add or delete fields, updating the application deletes and re-creates the event class. This includes dropping and re-creating the SQL Server tables and indexes used by this event class. Any data existing in the original event class tables is permanently deleted. |
Пример
The following example shows the definition of a StockSymbol event field.
<Field>
<FieldName>StockSymbol</FieldName>
<FieldType>char(10)</FieldType>
<FieldTypeMods>NOT NULL</FieldTypeMods>
</Field>
См. также
Справочник
Application Definition File Reference
Другие ресурсы
Определение свойств основного класса событий
Обновление экземпляров и приложений