[Overview][Constants][Types][Classes][Procedures and functions][Index] | Reference for unit 'db' (#fcl)

# TFMTBCDField

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

Fixed precision floating point data field

## Declaration

Source position: db.pas line 813

`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 classe
`TField` |  | Provide access to the contents of a single field in a record
`TComponent,IUnknown,IInterfaceComponentReference`
`TPersistent,IFPObserved`
`TObject`

## 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: Feb 26 2014