run this to create db : psql -U asa -d quotes -a -f tables.sql
Hibernate – Many-to-Many example from : https://www.mkyong.com/hibernate/hibernate-many-to-many-relationship-example-annotation/
and source code from : http://www.mkyong.com/wp-content/uploads/2011/04/Hibernate-many-to-many-annotation.zip