[logon] forthcoming revision of [incr tsdb()] database schema

[Stephan Oepen]

colleagues,

just a heads-up: i am planning on releasing a new version of the
[incr tsdb()] database schema later this week.  this new revision
adds a number of fields (and moderately reinterprets one or two
existing ones), to provide the setup for forest-based treebanking.

as with every schema revision, [incr tsdb()] will continue to read
old profiles, but the new code will only support writing to profiles
with the new schema.  in other words, all skeletons will need to
be updated to the schema.  for data that is maintaines as part of
the LOGON tree (mostly english by now), i will make the changes.
but anyone maintaining their own skeletons will need to be aware
of this update, and synchronize their getting the new code (i.e.
updating their LOGON tree) to also dropping in the new scheme
to their skeletons then.

here are some instructions on this topic i had emailed when i
last revised the database schema:

  http://lists.emmtee.net/archives/logon/2011/000119.html

assuming you applied those changes back then, this time it will
be sufficient to just drop in the new ‘relations’ file (once it has
been released, and the [incr tsdb()] and and run-time binaries
support it).

more on all this later in the week, i hope!  if you happen to be
in the middle of something critical and would rather not think
about database schema updates for a little while, it might be a
good idea to bring your LOGON tree up-to-date /now/, before
i commit the changes related to the schema revision.

best wishes, oe

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+++ Universitetet i Oslo (IFI); Boks 1080 Blindern; 0316 Oslo; (+47) 2284 0125
+++    --- oe at ifi.uio.no; stephan at oepen.net; http://www.emmtee.net/oe/ ---
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