DB Namespace

This is namespace DB.

Name	Description
Classes	The following table lists classes in this documentation.
Interfaces	The following table lists interfaces in this documentation.
Functions	The following table lists functions in this documentation.
Structs, Records, Enums	The following table lists structs, records, enums in this documentation.
Types	The following table lists types in this documentation.
Variables	The following table lists variables in this documentation.
Constants	The following table lists constants in this documentation.

Classes

	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.

Constants

Name	Description
dsEditModes	This is constant DB.dsEditModes.
dsMaxStringSize	This is constant DB.dsMaxStringSize.
dsWriteModes	This is constant DB.dsWriteModes.
FieldTypeNames	This is constant DB.FieldTypeNames.
FieldTypeVarMap	This is constant DB.FieldTypeVarMap.
ftFixedSizeTypes	This is constant DB.ftFixedSizeTypes.
ftNonTextTypes	This is constant DB.ftNonTextTypes.
ObjectFieldTypes	This is constant DB.ObjectFieldTypes.
RegisterFieldsProc	This is constant DB.RegisterFieldsProc.

Functions

	Name	Description
	BuffersEqual	Indicates whether two buffers have the same contents.
	DatabaseError	Creates and raises an EDatabaseError exception.
	DatabaseErrorFmt	Creates and raises an EDatabaseError exception with a formatted error message.
	DisposeMem	Frees memory.
	ExtractFieldName	Returns the next name in a semicolon-delimited string of field names.
	GetFieldProperty	Returns a TField object for a dataset and data control.
	RegisterFields	Registers a set of field components so that they appear in the Dataset designer.
	VarTypeToDataType	Returns the field type value that most closely corresponds to a Variant type.

Interfaces

	Name	Description
	IDBApplication	Interface for database application.
	IDBScreen	Interface to display device.
	IDBSession	IDBSession is the interface for database sessions.
	IParamImplementation	This is class DB.IParamImplementation.
	IProviderSupport	IProviderSupport is the interface that datasets use to enable a provider to represent them.
	IProviderSupport2	Interface datasets use to enable providers to represent them with Unicode support.

Structs, Records, Enums

	Name	Description
	TAutoRefreshFlag	TAutoRefreshFlag Indicates whether the server provides field values, and if so, why.
	TBlobStreamMode	TBlobStreamMode indicates how a BLOB stream can be used.
	TBookmarkFlag	This is record DB.TBookmarkFlag.
	TDataAction	TDataAction indicates how an application should respond to a database error condition.
	TDataEvent	TDataEvent identifies an event that occurs to a dataset.
	TDataSetState	TDataSetState indicates the current operating mode of a dataset component.
	TDateTimeRec	This is record DB.TDateTimeRec.
	TDBScreenCursor	This is record DB.TDBScreenCursor.
	TFieldAttribute	TFieldAttribute and TFieldAttributes indicate various attributes of a field.
	TFieldKind	TFieldKind indicates what type of information a field component represents.
	TFieldType	TFieldType is a set of values that parallel the data types of fields in tables.
	TFilterOption	TFilterOption and TFilterOptions influence how filter strings are applied.
	TGetMode	This is record DB.TGetMode.
	TGetResult	This is record DB.TGetResult.
	TGroupPosInd	TGroupPosInd and TGroupPosInds indicate the position of the current record within its group.
	TIndexOption	This is record DB.TIndexOption.
	TLocateOption	This is record DB.TLocateOption.
	TLookupListEntry	This is record DB.TLookupListEntry.
	TPacketAttribute	This is record DB.TPacketAttribute.
	TParamType	TParamType and TParamTypes represent the use of parameters on datasets that represent queries or stored procedures.
	TProviderFlag	TProviderFlag and TProviderFlags indicate how a provider uses a field value when applying updates.
	TPSCommandType	This is record DB.TPSCommandType.
	TUpdateAction	TUpdateAction Indicates how an a dataset should proceed after an event handler has processed an update.
	TUpdateKind	TUpdateKind defines the values for the UpdateKind parameter of OnUpdateError and OnUpdateRecord event handlers.
	TUpdateMode	TUpdateMode indicates how to locate records so that they can be updated.
	TUpdateStatus	TUpdateStatus indicates the update status of a record.

Types

Name	Description
Largeint	This is type DB.Largeint.
PBookmarkFlag	This is type DB.PBookmarkFlag.
PLookupListEntry	This is type DB.PLookupListEntry.
PPacketAttribute	This is type DB.PPacketAttribute.
TBlobByteData	TBlobByteData stores the contents of a Binary Large Object (BLOB) field.
TBlobData	This is type DB.TBlobData.
TBlobType	TBlobType indicates the type of a BLOB field.
TBookmark	TBookmark identifies a record in a dataset for later navigation.
TBookmarkStr	TBookmarkStr is a bookmark, represented as a string.
TBufferList	This is type DB.TBufferList.
TCheckConstraintClass	This is type DB.TCheckConstraintClass.
TCheckConstraintsClass	This is type DB.TCheckConstraintsClass.
TConnectChangeEvent	Type of function called when connection changes.
TDataChangeEvent	This is type DB.TDataChangeEvent.
TDataOperation	This is type DB.TDataOperation.
TDataSetClass	TDataSetClass is the class type of a TDataSet descendant.
TDataSetErrorEvent	This is type DB.TDataSetErrorEvent.
TDataSetNotifyEvent	This is type DB.TDataSetNotifyEvent.
TDateTimeAlias	This is type DB.TDateTimeAlias.
TDefUpdateMethod	This is type DB.TDefUpdateMethod.
TFieldAttributes	This is type DB.TFieldAttributes.
TFieldChars	TFieldChars indicates the set of characters that are valid for field.
TFieldClass	TFieldClass is the class type of a TField descendant.
TFieldDefClass	This is type DB.TFieldDefClass.
TFieldDefListClass	This is type DB.TFieldDefListClass.
TFieldDefsClass	This is type DB.TFieldDefsClass.
TFieldGetTextEvent	TFieldGetTextEvent is the type for event handlers that assign a field's value from a string.
TFieldKinds	This is type DB.TFieldKinds.
TFieldListClass	This is type DB.TFieldListClass.
TFieldNotifyEvent	This is type DB.TFieldNotifyEvent.
TFieldRef	This is type DB.TFieldRef.
TFieldsClass	This is type DB.TFieldsClass.
TFieldSetTextEvent	TFieldSetTextEvent is the type for event handlers that assign a field's value from a string.
TFilterOptions	This is type DB.TFilterOptions.
TFilterRecordEvent	This is type DB.TFilterRecordEvent.
TGroupPosInds	This is type DB.TGroupPosInds.
TIndexDefClass	This is type DB.TIndexDefClass.
TIndexDefsClass	This is type DB.TIndexDefsClass.
TIndexOptions	TIndexOptions describes the attributes of an index.
TLocateOptions	TLocateOptions defines the values for the Options parameter of the Locate method of a dataset.
TLookupListClass	This is type DB.TLookupListClass.
TParamClass	This is type DB.TParamClass.
TParamsClass	This is type DB.TParamsClass.
TParamTypes	This is type DB.TParamTypes.
TProviderFlags	This is type DB.TProviderFlags.
TRecordBuffer	This is type DB.TRecordBuffer.
TResyncMode	TResyncMode is a set of flags that indicate operations a dataset should perform when resynchronizing data.
TSQLCommandType	TSQLCommandType indicates how an SQL dataset specifies the command it executes.
TUpdateErrorEvent	This is type DB.TUpdateErrorEvent.
TUpdateRecordEvent	This is type DB.TUpdateRecordEvent.
TUpdateRecordTypes	This is type DB.TUpdateRecordTypes.
TUpdateStatusSet	This is type DB.TUpdateStatusSet.

Variables

Name	Description
DBApplication	This is variable DB.DBApplication.
DBScreen	This is variable DB.DBScreen.
DefaultCheckConstraintClass	This is variable DB.DefaultCheckConstraintClass.
DefaultCheckConstraintsClass	This is variable DB.DefaultCheckConstraintsClass.
DefaultFieldClasses	This is variable DB.DefaultFieldClasses.
DefaultFieldDefClass	This is variable DB.DefaultFieldDefClass.
DefaultFieldDefListClass	This is variable DB.DefaultFieldDefListClass.
DefaultFieldDefsClass	This is variable DB.DefaultFieldDefsClass.
DefaultFieldListClass	This is variable DB.DefaultFieldListClass.
DefaultFieldsClass	This is variable DB.DefaultFieldsClass.
DefaultIndexDefClass	This is variable DB.DefaultIndexDefClass.
DefaultIndexDefsClass	This is variable DB.DefaultIndexDefsClass.
DefaultLookupListClass	This is variable DB.DefaultLookupListClass.
DefaultParamClass	This is variable DB.DefaultParamClass.
DefaultParamsClass	This is variable DB.DefaultParamsClass.
LoginDialogExProc	This is variable DB.LoginDialogExProc.
LoginDialogProc	This is variable DB.LoginDialogProc.
PasswordDialog	Displays a dialog box that prompts the user for the password of a local password-protected table.
RemoteLoginDialogProc	This is variable DB.RemoteLoginDialogProc.
ScreenCursorProc	This is variable DB.ScreenCursorProc.

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