Prior art - maybe?
Posted Jun 15, 2003 13:38 UTC (Sun) by
edt (subscriber, #842)
In reply to:
It doesn't matter whether is is right or wrong by xorbe
Parent article:
Does SCO own read-copy-update?
IBM's DMS product from the 70s-80s used something that could be called read
copy update. To avoid locking records being updated it would get the record,
save a copy let the user do his or her thing with it, get the record a second time,
this time locking it, compare the originals. If they were the same the update
would proceed, but the time the record was locked would be quite short.
They called this Save Compare mode. Could this be prior art?
Ed Tomlinson
ps. if my memory serves me correctly the product number was 5746-xc4
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