Database clustering involves database database replication to achieve either redundancy (high availability, mirroring and disaster recovery), workload balancing for performance or scaling (analytics, business intelligence, data warehouse, queries, reporting), maintenance (upgrades, migration and conversionda), database consolidation and other objectives for data access, efficiency and better decision making.
Database clustering can utilizes
database replication so that the source and target databases are at different versions, or even of a different database type all together, such as PostgreSQl to Oracle replication, or DB2 to SQL. Database clustering may be used for a combination of on premise, virtual and
