*===========================================================================================================
* The Norwegian Petroleum Directorate's Fact-Pages. Description of download file.
*===========================================================================================================
* CONTENTS: Field. Partners, complete history.
*-----------------------------------------------------------------------------------------------------------
* CSV SPECIFICATIONS:
*-----------------------------------------------------------------------------------------------------------
* - column delimiter  : ,
* - text qualifier    : "
* - decimal separator : .
* - date format       : dd.mm.yyyy
*-----------------------------------------------------------------------------------------------------------
* COLUMN SPECIFICATIONS:
*-----------------------------------------------------------------------------------------------------------
* column name                    datatype       description
* .............................. .............. ............................................................
* field_name                     varchar(40)    Official field name.
*
* date_valid_from                date           The date the partnership is valid from.
*
* date_valid_to                  date           The date the partnership is valid to/expires. 
*
* company_long_name              varchar(100)   Company long name.
*
* interest                       real           The company's interest in the field in the given period.
*
* date_generated                 date           The date the download file was generated from the NPD's
*                                               databases.
*
* NPDID_field                    bigint         NPD's unique field id.
*
* NPDID_company                  bigint         NPD's unique company id.
*
*-----------------------------------------------------------------------------------------------------------
* HISTORY:
*-----------------------------------------------------------------------------------------------------------
* date       changed by  description
* .......... ........... ...................................................................................
* 16.09.2003 OHO/NPD     Initial version
*
* dd.mm.yyyy nnn/ccc     description of changes
*===========================================================================================================