34 Weininger
This also means that in the case of a disaster like the failure of a whole data
center, the DBMS has to continue operation.
Besides these availability requirements, there are also new scalability re-
quirements. The peak load for an application and with it the peak load on a
database system may change dramatically within a very short time span, for
instance because of some promotion for a web application. Therefore, it must
be possible to dynamically add and remove resources from a DBMS while all
the new computing resources see all the contents of the database immediately
and are also able to modify all data immediately. Cloud computing ...