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

TFMTBCDField

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Fixed precision floating point data field.

Declaration

Source position: db.pas line 1021

type TFMTBCDField = class(TNumericField)

public

  constructor Create(); override;

  

Create a new instance of the TFMTBCDField class.

  function CheckRange();

  

Check value if it is in the range defined by MinValue and MaxValue.

  property Value: TBCD; [rw]

  

The value of the field as a BCD value.

published

  property Precision: LongInt; [rw]

  

Total number of digits in the BCD data.

  property Currency: Boolean; [rw]

  

Does the field contain currency data ?

  property MaxValue: string; [rw]

  

Maximum value for the field.

  property MinValue: string; [rw]

  

Minimum value for the field.

  property Size: Integer;

  

Number of digits after the decimal point.

end;

Inheritance

TFMTBCDField

  

Fixed precision floating point data field.

|

TNumericField

  

Base class for all numerical data field classes.

|

TField

  

Provide access to the contents of a single field in a record.

|

TComponent

|

TPersistent,IUnknown,IInterfaceComponentReference

|

TObject,IFPObserved

Description

TFMTBCDField is the field created when a data type of ftFMTBCD is encountered. It represents usually a fixed-precision floating point data type (BCD : Binary Coded Decimal data) such as the DECIMAL or NUMERIC field types in an SQL database.

See also

TFloatField

  

Class for floating point values.


Documentation generated on: Oct 27 2024