HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

                   dBASE - File Header Structure (dBASE II)

       Offset Size           Description

         00   byte    dBASE version number 02h=dBASE II
         01   word    number of data records in file
         03   byte    month of last update
         04   byte    day of last update
         05   byte    year of last update
         06   word    size of each data record
         08 512bytes  field descriptors  (see below)
        520   byte    0Dh if all 32 field descriptors used; otherwise 00h

       - dBASE II file header has a fixed size of 521 bytes


                  DBASE - File header structure (DBASE III)

       Offset Size            Description

         00   byte      dBASE vers num 03h=dBASE III w/o .DBT
                        83h=dBASE III w .DBT
         01   byte      year of last update
         02   byte      month of last update
         03   byte      day of last update
         04   dword     long int number of data records in file
         08   word      header structure length
         10   word      data record length
         12 20bytes     version 1.0 reserved data space
       32-n 32bytes ea. field descriptors  (see below)
        n+1   byte      0dH field terminator.


       - unlike dBASE II, dBASE III has a variable length header


                          dBASE - Field Descriptors

dBASE II Field Descriptors (header contains 32 FDs)

       Offset Size               Description

         00  11bytes    null terminated field name string, 0Dh as first
                        byte indicates end of FDs
         11   byte      data type, Char/Num/Logical (C,N,L)
         12   byte      field length
         13   word      field data address, (set in memory)
         15   byte      number of decimal places


dBASE III Field Descriptors (FD count varies):

       Offset Size            Description

         00  11bytes   null terminated field name string
         11   byte     data type, Char/Num/Logical/Date/Memo
         12   dword    long int field data address, (set in memory)
         16   byte     field length
         17   byte     number of decimal places
         18  14bytes   version 1.00 reserved data area

Esc or Alt-X to exit dBASE files Home/PgUp/PgDn/End ←↑↓→
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