On 22 November 2013 17:06, Jason White <jason@jasonjgw.net> wrote:

I don't know much about database systems, so this might not help, but the
PostGRESQL documentation appears relevant:
http://www.postgresql.org/docs/9.3/static/mvcc-intro.html
(be sure to read the sections that follow the introduction for details).

Ok, thanks for this, very interesting reading. Looks like postgresql has 4 different levels, depending on application requirements.

Now if only I could find the equivalent documentation for mysql :-)

--
Brian May <brian@microcomaustralia.com.au>