Optimistic concurrency control typically relies on what?

Problem Statement

Explanation

Optimistic control assumes conflicts are rare. It reads without locks and, at update, verifies the row version or timestamp has not changed. If changed, it retries or errors. This reduces lock contention but needs careful retry logic in the application.

Code Solution

SolutionRead Only

UPDATE t SET val=:v, version=version+1
WHERE id=:id AND version=:expected;

Practice Sets

This question appears in the following practice sets:

Transactions, Concurrency & Isolation

Next Question

Master Interviews
Anywhere, Anytime

Optimistic concurrency control typically relies on what?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews Anywhere, Anytime

Optimistic concurrency control typically relies on what?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime