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2.15.2 Locking
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2.15 Concurrency Control and
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2.15 Concurrency Control and
2.15.1 Why concurrency control?
To increase performance, multiple transactions must be able to carry on work simultaneously...
...but if data is shared, then can lead to problems such as lost updates and inconsistent retrievals.
So we must ensure schedules of access to data for concurrent transactions are computationally equivalent to a serial schedule of the transactions.
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2.15.2 Locking
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2.15 Concurrency Control and
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2.15 Concurrency Control and
Ian Wakeman 2005-02-22
