API:Data.DB.TCheckConstraint
| [–] Properties | |
|---|---|
| Type: class | |
| Visibility: public | |
| Source: Data.DB.pas Data.DB.hpp
| |
| Unit: Data.DB | |
| Parent: Data.DB | |
Delphi
TCheckConstraint = class(TCollectionItem)
C++
class PASCALIMPLEMENTATION TCheckConstraint : public System::Classes::TCollectionItem
Description
TCollectionItem represents an item in a collection.
Data.DB.TCheckConstraint inherits from System.Classes.TCollectionItem. All content below this line refers to System.Classes.TCollectionItem.
TCollectionItem represents an item in a collection.
A TCollection holds a group of TCollectionItem objects. TCollectionItems are created and destroyed by TCollection's Add and Clear methods. Each TCollectionItem has a Collection property that points to the TCollection object to which the item belongs.
Objects descending from TCollection can contain objects descending from TCollectionItem. For example, a TDBGridColumns object contains TColumn objects; these two classes are used by TDBGrid to represent grid columns.