The Unique property determines, whether the given index is unique.
Applies to objects: Index.
[[Let] RetVal = ] object.Unique [Let] object.Unique = SetVal |
The Unique property syntax has these parts:
Part | Description |
object | Required. Ссылка на экземпляр объекта |
RetVal | Optional. Переменная типа Boolean. |
SetVal | Required. Переменная типа Boolean. |
This property can be set only when creating the index. Otherwise modifying this property is ignored.
If the index is unique, it means that the fields it's based on, are different. This guarantees that all operations that use this index will affect exactly the chosen records. Besides, indexing decreases the record search time.
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See Also |
Index Object, Pimary Property. |