added characters
minor bug fixes and added uni schema
usin strncmp
added another test query
falt values: one value class containing its type in order to avoid virtual function calles
cleaning up ..
added root operator
more cleaning up
Merge branch 'master' of git://github.com/alexandervanrenen/Gamera-Database
First try of LockManager
Second version of LockManager with Deadlock-Detection by Wait-for-Graph