Star transformations

https://blogs.oracle.com/optimizer/entry/star_transformation

sql developer 4 - ubuntu crahses

The answer turned out to be

ulimit -c unlimited
followed by
unset GNOME_DESKTOP_SESSION_ID

then ./sqldeveloper.sh

https://forum.java.sun.com/thread/260563

materialized view - this article sums up my view of Materialized views

http://oraclesponge.wordpress.com/2006/04/12/a-quick-materialized-view-performance-note/