Classes

The following table lists classes in this documentation.

	Name	Description
	EDatabaseError	EDatabaseError is the exception class for database errors.
	EUpdateError	EUpdateError is the exception class for dataset provider update errors.
	TADTField	A TADTField object represents an ADT (Abstract Data Type) field in a dataset.
	TAggregateField	TAggregate field represents a maintained aggregate in a client dataset.
	TArrayField	TArrayField represents an Array field in a dataset.
	TAutoIncField	TAutoIncField is a persistent field object for an autoincrement field in a dataset.
	TBCDField	TBCDField represents a binary-coded decimal (BCD) field in a dataset.
	TBinaryField	TBinaryField represents an untyped binary field in a dataset.
	TBlobField	TBlobField represents a field in a dataset that holds a reference to a binary large object (BLOB).
	TBooleanField	TBooleanField represents a field containing Boolean values.
	TByteField	This is class DB.TByteField.
	TBytesField	TBytesField represents a bytes field in a dataset.
	TCheckConstraint	TCheckConstraint represents a record-level constraint on a dataset component.
	TCheckConstraints	TCheckConstraints contains a collection of check constraints for a dataset component.
	TCurrencyField	TCurrencyField represents a field that contains currency values in a dataset.
	TCustomConnection	TCustomConnection is the base class for components that connect datasets to a remote source of data.
	TDataLink	TDataLink is a helper class used by data-aware objects to coordinate the actions of TDataSource and TDataSet, and to respond to data events.
	TDataSet	TDataSet is the base class for all dataset components that represent data in rows and columns.
	TDataSetDesigner	TDataSetDesigner is the base class for all dataset designers.
	TDataSetField	TDataSetField provides access to nested datasets.
	TDataSource	TDataSource provides an interface between a dataset component and data-aware controls on a form.
	TDateField	TDateField represents a date field in a dataset.
	TDateTimeField	TDateTimeField represents a date-time field in a dataset.
	TDefaultLookupList	This is class DB.TDefaultLookupList.
	TDefCollection	TDefCollection holds the definition objects (TNamedItem) that represent the specifications for database entities such as fields or indexes.
	TDetailDataLink	TDetailDataLink is the ancestor to datalink classes that manage the relationships between datasets that are linked in master/detail relationships.
	TExtendedField	This is class DB.TExtendedField.
	TField	TField is the common ancestor of all the field components.
	TFieldDef	TFieldDef is a field definition that corresponds to a physical field of a record in a table underlying a dataset.
	TFieldDefList	TFieldDefList lists the field definition (TFieldDef) objects of a dataset in a flattened form.
	TFieldDefs	TFieldDefs holds the field definition (TFieldDef) objects that represent the physical fields underlying a dataset.
	TFieldList	TFieldList lists the fields of a dataset, flattening out the structure of any object fields.
	TFields	TFields holds the field (TField) objects that represent the physical fields underlying a dataset or an object field such as TADTField and TArrayField.
	TFieldsEnumerator	Enumerates database fields.
	TFlatList	TFlatList is an abstract base class for objects that represent a flattened list of fields or field definitions.
	TFloatField	TFloatField represents a field that contains floating-point values in a dataset.
	TFMTBCDField	TFMTBCDField represents a binary-coded decimal (BCD) field in a dataset.
	TGraphicField	TGraphicField represents a graphics field in a dataset.
	TGuidField	TGuidField represents a guid field in a dataset.
	TIDispatchField	TIDispatchField represents an IDispatch field in a dataset.
	TIndexDef	TIndexDef describes an index in a database table.
	TIndexDefs	TIndexDefs holds the list of available index definitions for a table.
	TIntegerField	TIntegerField represents a signed 32-bit integer field in a dataset.
	TInterfaceField	TInterfaceField represents an interface field in a dataset.
	TLargeintField	A TLargeintField object represents a large integer field in a dataset.
	TLongWordField	This is class DB.TLongWordField.
	TLookupList	TLookupList maintains a list of lookup values associated with a set of key field values.
	TMasterDataLink	TMasterDataLink allows a dataset to establish a master/detail relationship.
	TMemoField	TMemoField represents a memo field in a dataset.
	TNamedItem	TNamedItem is the base class for definitions used by datasets.
	TNumericField	TNumericField is the common ancestor of all the numeric fields in a dataset.
	TObjectField	TObjectField is the common ancestor of TADTField, TArrayField, TDataSetField, and TReferenceField components in a dataset.
	TParam	TParam represents a field parameter for a query or stored procedure.
	TParamDataSetObject	This is class DB.TParamDataSetObject.
	TParamObject	This is class DB.TParamObject.
	TParamParamsObject	This is class DB.TParamParamsObject.
	TParams	TParams manages a list of field parameters.
	TParamStreamObject	This is class DB.TParamStreamObject.
	TReferenceField	TReferenceField represents a REF field in a dataset.
	TShortintField	This is class DB.TShortintField.
	TSmallintField	TSmallIntField represents a signed 16-bit integer field in a dataset.
	TSQLTimeStampField	TSQLTimeStampField represents a date-time field in a DBExpress dataset.
	TStringField	TStringField represents a string field in a dataset.
	TTimeField	TTimeField represents a time field in a dataset.
	TUnsignedAutoIncField	This is class DB.TUnsignedAutoIncField.
	TVarBytesField	TVarBytesField represents a variable-length untyped binary field in a dataset.
	TVariantField	TVariantField represents a variant field in a dataset.
	TWideDataSet	Base class for all dataset components that represent Unicode data in rows and columns.
	TWideMemoField	TWideMemoField represents a memo field in a dataset.
	TWideStringField	TWideStringField represents a large string field in a dataset.
	TWordField	TWordField represents an unsigned 16-bit integer field in a dataset.

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