API:Bde.DBTables.TQuery
Delphi
TQuery = class(TDBDataSet)
C++
class PASCALIMPLEMENTATION TQuery : public TDBDataSet
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
class | public | Bde.DBTables.pas Bde.DBTables.hpp |
Bde.DBTables | Bde.DBTables |
Description
TDBDataSet encapsulates database connectivity for descendant dataset objects.
Bde.DBTables.TQuery inherits from Bde.DBTables.TDBDataSet. All content below this line refers to Bde.DBTables.TDBDataSet.
TDBDataSet encapsulates database connectivity for descendant dataset objects.
TDBDataSet defines database-related connectivity properties and methods for a dataset. Applications never use TDBDataSet objects directly. Instead they use the descendants of TDBDataSet, such as TQuery, TStoredProc, and TTable, which inherit its database-related properties and methods.
Developers who create custom dataset components may want to derive them from TDBDataSet to inherit to the database-specific properties of TDBDataSet in addition to all the functionality of TDataSet and the BDE-related properties and methods of TBDEDataSet. In this case, developers should examine the source code to study the protected methods of TDBDataSet that are not documented for this object.