Data.DB.TFieldAttribute
Delphi
TFieldAttribute = (faHiddenCol, faReadonly, faRequired, faLink, faUnNamed, faFixed);
C++
enum DECLSPEC_DENUM TFieldAttribute : unsigned char { faHiddenCol, faReadonly, faRequired, faLink, faUnNamed, faFixed };
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
enum | public | Data.DB.pas Data.DB.hpp |
Data.DB | Data.DB |
Description
TFieldAttribute and TFieldAttributes indicate various attributes of a field.
TFieldAttributes is a set that describes the attributes of a physical field in an underlying database table. It can contain zero or more of the following TFieldAttribute values:
Value | Meaning |
---|---|
faHiddenCol |
Internal flag for hidden columns |
faReadonly |
Indicates whether the physical field in the underlying table is read-only. |
faRequired |
Indicates whether a value for the physical field in the underlying table is required. |
faLink |
Internal flag for nested datasets. |
faUnNamed |
Internal use only. Indicates a TObjectField in a nested table that has no name associated with it. |
faFixed |
Indicates that the field has a fixed size. |