|
|
|
|
KeyType (Property)
Disponible solo con estos tipos de conexión
The KeyType property is used to set the characteristics of a key item. You can: - Determine if an item is key for an item defined in the data model editor or through programming
- Define a key item (when the item is described through programming).
Commande.IDCde.TypeClé = hUniqueKey
...
HDescribeFile(Commande)
Sintaxis <Characteristic>: Integer constant The characteristics of an item are: | | hDuplicatesKey | Key with duplicates. This item can have the same value for several data file records. | hNotAKey | The item is not a key. | hPrimaryKey | Primary key. The value assigned to this item will not be null and will only be in the data file. | hUniqueKey | Unique key. The value assigned to this item will be unique in the data file. No file record will have the same value for this item. Remark: a unique key can authorize a null value. |
<Data file>: Character string Name of the data file used. This name was defined in the data model editor or with the File Description type. <Item>: Character string Name of the item used. This name is defined in the data model editor or with the Item Description type.
Esta página también está disponible para…
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|