Hmmm, MediaWiki is on the right track storing different aspects
of an article in different MySQL database tables, if this model from
nature is to be followed.
"Each rat was shocked while a drug was injected into three parts of the
brain. Two days later their memory of the bad experience was tested,
and the drugs revealed what parts of the brain were at work.
The findings: The hippocampus is involved in processing memory for
context; the anterior cingulate cortex deals with retaining memories
of unpleasant stimuli; the amygdala consolidates memories more broadly
and influences the storage of both contextual and unpleasant
information."
http://www.livescience.com/health/060202_thoughts_scattered.html