States that it is unknown whether the columns may be nulled.
Value: 2
Syntax
[Android.Runtime.Register("columnNullableUnknown")]
public const
int ColumnNullableUnknown Remarks
Requirements
Namespace: Java.Sql
Assembly: Mono.Android (in Mono.Android.dll)
Assembly Versions: 0.0.0.0
Since: Added in API level 1