The data accessible through antmaps.org is managed using PostgreSQL,an open source relational database management system.The database is hosted on PostgreSQL database server version 9.4.The server is configured to be a hot-standby to the GABI database,which is separately hosted on a different PostgreSQL server.In the hot-standby configuration,all data available in the GABI database is continuously replicated,through PostgreSQL Streaming Replication,and changes are made in the GABI database with little delay.