EphyNodeDb Data tree An #EphyNodeDb is a database for arbitrary data organized in a tree. Each database is stored along with its name in a global set of databases. Databases can be created using ephy_node_db_new() and retrieved using ephy_node_db_get_by_name(). Each #EphyNode inside an #EphyNodeDb is identified by a unique node ID. By keeping a handle on the ID, one can use ephy_node_db_get_node_from_id() to retrieve its corresponding #EphyNode. #EphyNodeDbs can be saved to disk using ephy_node_db_write_to_xml_safe() and restored using ephy_node_db_load_from_file().