What are some examples of concurrency control issues in databases?
An example of an AI chatbot conversation about concurrency control issues in databases.
What are some examples of concurrency control issues in databases?
Concurrency control issues occur when multiple transactions access the same data simultaneously, leading to potential conflicts. Examples include lost updates, dirty reads, and uncommitted data.
Can you explain what a lost update is?
A lost update happens when two transactions read the same data and then update it, but one transaction's update overwrites the other's, causing data loss.
What is a dirty read?
A dirty read occurs when a transaction reads data that has been modified by another transaction but not yet committed, leading to potential inconsistencies.
How can these issues be prevented?
These issues can be prevented using locking mechanisms, timestamps, or multi-version concurrency control to ensure data integrity.
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