IBX.IBUpdateSQL.TIBUpdateSQL
Delphi
TIBUpdateSQL = class(TIBDataSetUpdateObject)
C++
class PASCALIMPLEMENTATION TIBUpdateSQL : public Ibx::Ibcustomdataset::TIBDataSetUpdateObject
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | IBX.IBUpdateSQL.pas IBX.IBUpdateSQL.hpp |
IBX.IBUpdateSQL | IBX.IBUpdateSQL |
Description
TIBUpdateSQL provides an object for updating read-only datasets when cached updates are enabled.
Use a TIBUpdateSQL object to provide SQL statements used to update read-only datasets represented by TIBQuery components when cached updates are enabled. A dataset is read-only either by design or circumstance. If a dataset is read-only by design, the application itself does not provide a user interface for updating data, but may institute a programmatic scheme behind the scenes.
TIBUpdateSQL provides a mechanism for circumventing what some developers consider an SQL-92 limitation. It enables a developer to provide INSERT, UPDATE, DELETE, and REFRESH statements for performing separate update queries on otherwise read-only result sets in such a manner that the separate update queries are transparent to the end user.
In practical application, a TIBUpdateSQL object is placed on a data module or form, and linked to a TIBQuery component through that component's UpdateObject property. If the UpdateObject property points to a valid TIBUpdateSQL object, the SQL statements belonging to the update object are automatically applied when cached updates are applied.