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Database principles set down in 83? | 66 comments | Create New Account
Comments belong to whoever posts them. Please notify us of inappropriate comments.
Database principles set down in 83?
Authored by: complex_number on Saturday, July 14 2012 @ 02:25 PM EDT
I wasn't referring to Database principals at all.

DEC produced a distributed file system for their VAX systems that ran VMS. In
order to stop two different system from updating the same bit of the same file
at the same time, you have to have a system of distributed lock managememt.
That is no different to the problems Oracle faced with implementing parallel
server. Two instances of the db running on two different systems. Updates to DB
objects have to be managed properly. As I recall, this was the bit of
technology that Oracle licensed for a period.

Distributed file systems on Linux face exactly the same issues that DEC did back
in the early 1980's. They adapted their filesystems and ACP's (Ancillary Control
Processes) to work in a distributed manner. That was standard from then to
today. Not an addon or a different filesystem type but the core OS Filesystem
type.
Requiring a different file structure (from ext3 etc) to work in a
clustered/distributed environment IMHO is just plain crazy.

The patents used in the case in question look to my untrained (legal) eye pretty
darn close to the technology used almost 30 years ago by DEC and is now owned by
HP.




---
Ubuntu & 'apt-get' are not the answer to Life, The Universe & Everything which
is of course, "42" or is it 1.618?

[ Reply to This | Parent | # ]

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