Databases Reference
In-Depth Information
Attributes
The Attributes property of a
Field
object can be a sum of the following values.
Note that for a
Field
object, the Attributes property is read-only.
adFldMayDefer
The field is deferred; that is, the field values are not retrieved from the data source
when the record is retrieved. Instead, we must explicitly request the values.
adFldUpdatable
The field value is writable.
adFldUnknownUpdatable
The provider cannot determine if we can write to the field.
adFldFixed
The field contains fixed-length data.
adFldIsNullable
The field accepts
Null
values.
adFldMayBeNull
Null
values can be read from the field.
adFldLong
The field is a long binary field. Hence, the
AppendChunk
and
GetChunk
methods
are available for this field.
adFldRowID
The field contains some type of record ID, such as a record number or unique
identifier.
adFldRowVersion
The field contains a time or date stamp used to track updates.
