Reference for unit 'db': Classes

`EDatabaseError`		Base class for all database-related errors
`EUpdateError`		Error raised when updating data during a post operation.
`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
`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
`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.
`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`
`TFloatField`		Class for floating point values
`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
`TLargeintField`		Field class for 64-bit signed integer data
`TLongintField`		Field class for 32-bit signed 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 classe
`TParam`		Parameter description class
`TParams`		A collection of parameter values for SQL-based datasets
`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

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