Overview
REVDAT records contain a history of the modifications made to an entry since its release.
Record Format
COLUMNS DATA TYPE FIELD DEFINITION
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1 - 6 Record name "REVDAT"
8 - 10 Integer modNum Modification number.
11 - 12 Continuation continuation Allows concatenation of multiple
records.
14 - 22 Date modDate Date of modification (or release for
new entries). This is not repeated
on continuation lines.
24 - 28 String(5) modId Identifies this particular
modification. It links to the
archive used internally by PDB.
This is not repeated on continuation
lines.
32 Integer modType An integer identifying the type of
modification. In case of revisions
with more than one possible modType,
the highest value applicable will be
assigned.
40 - 45 LString(6) record Name of the modified record.
47 - 52 LString(6) record Name of the modified record.
54 - 59 LString(6) record Name of the modified record.
61 - 66 LString(6) record Name of the modified record.
Details
* Each time revisions are made to the entry, a modification number is assigned in increasing (by 1) numerical order. REVDAT records appear in descending order (most recent modification appears first). New entries have a REVDAT record with modNum equal to 1 and modType equal to 0. Allowed modTypes are:
0 Initial released entry.
1 Miscellaneous - mostly typographical.
2 Modification of a CONECT record.
3 Modification to coordinates or transformations.
4 - 9 Not defined.
* Each revision may have more than one REVDAT record, and each revision has a separate continuation field.
Verification/Validation/Value Authority Control
The modType must be one of the defined types, and the given record type must be valid. If modType is 0, the modId must match the entry's ID code in the HEADER record.
Relationships to Other Record Types
REMARK 860 presents the correction or change that is made to an entry. Also, see verification above.
Example
1 2 3 4 5 6 7
1234567890123456789012345678901234567890123456789012345678901234567890
REVDAT 3 15-OCT-89 1PRCB 1 REMARK
REVDAT 2 19-APR-89 1PRCA 2 CONECT
REVDAT 1 09-JAN-89 1PRC 0