Unit 'DB'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index]	[#fcl]

Reference for unit 'DB': Classes

`EDatabaseError`		Base class for all database-related errors.
`EUpdateError`		Error raised when updating data during a post operation.
`IProviderSupport`		Interface for Provider support.
`TArrayField`
`TAutoIncField`		Field for auto-incremental, 32-bit signed integer data.
`TBCDField`		Field class for Binary Coded Decimal (BCD) values.
`TBinaryField`		Field class for working with binary field data.
`TBlobField`		Base class for BLOB field data.
`TBooleanField`		Boolean field class type.
`TByteField`		Field class for 8-bit unsigned integer data.
`TBytesField`		Field class for fixed size byte array values.
`TCheckConstraint`		Record-level constraint definition.
`TCheckConstraints`		Set of record-level constraints.
`TCurrencyField`		Class for currency fields.
`TCustomConnection`		Abstract class for connections to a server.
`TDatabase`		Base class for connecting a FreePascal application to an external Database engine.
`TDataLink`		Data event handling agent for controls.
`TDataSet`		Base class for records-based data-access.
`TDataSetEnumerator`		Enumerator for `TDataset` records.
`TDataSource`		Component representing the link between a local (GUI) component and a dataset.
`TDateField`		Field class for date values.
`TDateTimeField`		Field class for date/time/Datetime values.
`TDBDataset`		Dataset connected to a database.
`TDBTransaction`		Encapsulate a transaction.
`TDefCollection`		Definition collection.
`TDetailDataLink`		Represents the link between a detail data source and a master datasource.
`TExtendedField`
`TField`		Provide access to the contents of a single field in a record.
`TFieldDef`		Class to describe one field in a record in a dataset.
`TFieldDefs`		Collection of `TFieldDef` instances.
`TFields`		Collection of #fcl.db.TField instances.
`TFieldsEnumerator`		Default enumerator for the fields collection of a dataset.
`TFloatField`		Class for floating point values.
`TFMTBCDField`		Fixed precision floating point data field.
`TGraphicField`		Field class for graphical BLOB field data.
`TGuidField`		Field class for native variant data.
`TIndexDef`		Index definition.
`TIndexDefs`		A class to keep a list of index definitions.
`TIntegerField`		Alias for `TLongintField`.
`TLargeintField`		Field class for 64-bit signed integer data.
`TLongintField`		Field class for 32-bit signed integer data.
`TLongWordField`		Field class for 32-bit unsigned integer data.
`TLookupList`		Class to manage lookup list values.
`TMasterDataLink`		Datalink for Master-Detail relationships between datasets.
`TMasterParamsDataLink`		Class to establish a master-detail relationship between dataset, based on parameters.
`TMemoField`		Base class for MEMO (text BLOB) field data.
`TNamedItem`		Named collection item.
`TNumericField`		Base class for all numerical data field classes.
`TObjectField`
`TParam`		Parameter description class.
`TParams`		A collection of parameter values for SQL-based datasets.
`TParamsEnumerator`		Enumerator for parameters.
`TShortintField`		Field class for 8-bit signed integer data.
`TSingleField`
`TSmallintField`		Field class for smallint (16-bit signed integer) data.
`TStringField`		Field class to handle ansistring fields.
`TTimeField`		Field class for time values.
`TVarBytesField`		Field class for variable size byte array values.
`TVariantField`		Field class for native variant data.
`TWideMemoField`		Field class for wide MEMO (widestring text BLOB) field data.
`TWideStringField`		Field class for widestring data.
`TWordField`		Field class for word (16-bit unsigned integer) data.