What is lock granularity in SQL?
An example of an AI chatbot conversation about lock granularity in SQL.
What is lock granularity in SQL?
Lock granularity refers to the level at which locks are applied in a database. It can be at the database, table, page, or row level.
Why is lock granularity important?
It's important because it affects concurrency and performance. Finer granularity allows more transactions to occur simultaneously, reducing contention.
Can you give an example of different lock granularities?
Sure! For instance, a row-level lock allows multiple transactions to modify different rows in the same table simultaneously, while a table-level lock would block all access to the table.
What are the trade-offs between fine and coarse lock granularity?
Fine granularity increases concurrency but can lead to higher overhead due to more locks being managed. Coarse granularity reduces overhead but can lead to contention and decreased performance.
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