While in need of importing content objects packages from an ez publish Community project v. 2014.07 installation running on mySQL to another ez publish installation running on postgreSQL, for those objects with eztags attributes I bumped into errors due to the fact that the tables required by the eztags extension were missing in the postgres DB and noticed that the schema.sql file for postgresql is missing from the bundled eztags extension.

To skip this problem, had to manually create the eztags and eztags_attribute_link tables.

For reference http://share.ez.no/forums/install-configuration/migration-from-mysql-to-postgresql#comment85594