The DBF and CDX file
DBF file for the individual pool
This is a file in FoxPro (external site) format with the following fields:
| Name | Type | Length | Description |
|---|---|---|---|
ISBN |
C | 13 | identifier (ISBN/ISMN/ISSN/EAN) of the record |
HEADER |
C | 24 | record label of the record |
POSITION |
N | 9,0 | position of the start of the record relative to the start of the file |
Where several identifiers exist for one item, there are correspondingly several entries for that item.
The NTX index file holds the index on the field ISBN.
File POOL.DBF in the root directory of the CD
This file holds entries from the individual pool DBF files, which speeds up access to the data during cataloguing. It is a file in FoxPro format with the following fields:
| Name | Type | Length | Description |
|---|---|---|---|
ISBN |
C | 13 | identifier (ISBN/ISMN/ISSN/EAN) of the record |
POOL |
N | 4 | pool number (in search order) as per POOL.INI |
COVER |
N | 2 | cover file number as per POOL.INI |
The index file POOL.CDX holds the index on the field ISBN.
Note
The identifier is given without hyphens and in capital letters. ISBN-13 (external site) is used as the ISBN.