At 06:07 PM 23/08/2003 -0300, you wrote:

>Firebird descriptors are pointers to C structures in memory that can be
>accessed by UDFs.
>The structures are composed by several fields which hold information about
>the database field or value that is being passed by the descriptor.
>
>Does anyone know, where I can find a reliable description of what kind of
>information is provided in each of these fields and how the structure
>behaves with the several different data types existing in the database?

http://www.cvalde.com/document/using_descriptors_with_udfs.htm

heLen