I used schemaspy and its meta data feature to create the following ER diagram for Kaltura CE database schema


You can see the full schema spy output here

This is the command line I used


sudo java -jar schemaSpy_4.1.1.jar -t mysql -u root   -db master_kaltura -dp ./mysql-connector-java-5.0.8/mysql-connector-java-5.0.8-bin.jar -host localhost -hq -o /var/www/kaltura_schema_dump  -meta kaltura_schema_meta.xml

here is the kaltura_schema_meta.xml file which contains the relationships between the database entities