Header

Internal Data Files in Business Rules! contain a header that may range from 16 to 256 byes.

The first 16 bytes of the header describe the table.

Byte Position  Data Type    Description
POS 1          B 4          Last Record in the table
POS 5          B 4          File Version 
POS 9          B 1          File Type  (4 = Internal)
POS 10         B 2          Record Length (Remember that this does not include the "Delete Byte"
POS 13         B 2          Header Length.   Data starts at the next byte.   (Note: The header length is usually the same as the True Record Length until the max value of 256)