ENABLE Reference Manual

THE GENERAL SERVER
Variable Portion of the Request
• UPDATE (TRANS-CODE=2):
--The requester must supply the old record image in
RECORD-IMAGE.
--The requester must supply the new record image in RECORD-
IMAGE-2. The new record follows the old record but always
begins on a word boundary.
--The requester must supply the byte length of the old record
image in RECORD-AREA-LENGTH. This might not be the length
of the record itself if padding of one byte is necessary to
position RECORD-IMAGE-2 on a word boundary.
NOTE
When the primary key is changed by an UPDATE operation,
the General Server actually performs an insert of the
new image followed by a DELETE of the old image. If
the DELETE of the old image fails because of error, both
the new and old images are left in the data base. If
the data base file is audited by TMF, the requester can
execute an ABORT-TRANSACTION to restore the data base
to its former state. If the data base file is not
audited by TMF, you must take other action to correct
the situation. If the situation is not corrected, the
data base could be left in an inconsistent state.
• INSERT (TRANS-CODE=4):
The requester supplies the new record image in RECORD-IMAGE.
• DELETE (TRANS-CODE=3):
The requester supplies the old record image in RECORD-IMAGE.
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