PostgreSQL, the world's most advanced open source database.
A comparison table of the details about and differences between the Postgres Developer Edition, Postgres Plus Standard Edition, and Postgres Plus Enterprise Edition database subscriptions.
Stop building, testing and fixing your own scripts or gathering tools from multiple open source projects with different release schedules and feature submission/support regimes. We build our tools specifically for enterprise requirements based on our customers' input, fit them together, release them together, and support them together. Much simpler.
xDB Replication Server in multi-master configurations provides enterprise-class solutions for database replication, backup, disaster recovery, read-scalability and write availability.
Use multi-master replication for read scalability and write availability for geo-dispersed databases. Replace a single overloaded master that consolidates regional data with multiple masters; one in each region that improve local write performance while providing consolidated data access in near real time.