Introduction › 21st Century Support › EXTDATA Files

EXTDATA Files

CA JARS places a common header onto SMF records before they are written as EXTDATA records to the history file. The date field in the common header, defined by MRXTHDR for CA Earl EXTDATA File/Record definitions, and MZXTHDR for CA Easytrieve EXTDATA File/Record definitions contains a two-digit year field. CA Earl macros GTOJUL, RECTOJUL and GETDIFF have been modified to handle leap year and date calculations. CA Easytrieve macros GTOJULZ, RECTOJLZ and GETDIFFZ have been modified to handle leap year and date calculations. Date fields in the base EXTDATA records are generally in packed length four fields with the century indicator turned on. For example, the first day of year 2000 would be stored as 0100001F.