Sunday, 15 January 2012

Multiversion Timestamp-based concurrency control -



Multiversion Timestamp-based concurrency control -

in timestamp based concurrency command why have reject write in transaction t_i on element x_k if transaction t_j j > read it.

as stated in document.

if t_j not planing update @ why necessary restrictive on t_i's actions ?

optimistic-concurrency database-concurrency

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