Berkeley DB Release 4.5, made available this week, adds Multi-Version Concurrency Control to improve the performance of concurrent, mixed read/write systems by giving each user their own 'snapshot' of the database.
The addition of Non-stop Upgrades enables a replicated Oracle Berkeley DB system to be upgraded without downtime. A Replication Framework has also been added to provide a pre-built set of functions for quickly building replicated systems.
Noel Yuhanna, a senior analyst at Forrester Research, said that the open source database market is currently valued at around $400m, which includes support, services, and licences, and will reach $1bn by the end of 2008.
"Oracle's Berkeley DB offers good DBMS features and functionality, with broad support for embedded databases, in both market share and technology innovation, " he said.
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