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Both InnoDB and PostgreSQL - as well as many other databases - use a technique called multi-version concurrency control (MVCC) to provide transaction isolation: transactions should not see the work of other, uncommitted transactions. MVCC means that, when a row is updated, the database stores both the old and new versions of the row.

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Showing posts with label cloud. Show all posts
Showing posts with label cloud. Show all posts

Thursday, October 14, 2010

What is IaaS or Private Cloud ?



What is IaaS or Private Cloud? And why Enterprise should consider it?

The shortest definition could be. ‘Virtualization on top of an HPC’. Let’s define it like this. What do you think is the biggest limitation to virtualization?