Which pairing of lock type and operation is most accurate for row-level locking?

Problem Statement

Explanation

Writers take exclusive locks to update protected rows. Locking engines may take shared locks for consistent reads at some levels to coordinate with writers. Intent locks communicate a transaction’s intent at higher granularity so engines can detect conflicts quickly without scanning fine-grained locks.

Code Solution

SolutionRead Only

-- conceptual
UPDATE accounts SET balance = balance - 100 WHERE id=1;

Practice Sets

This question appears in the following practice sets:

Transactions, Isolation & Concurrency Control

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Which pairing of lock type and operation is most accurate for row-level locking?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Which pairing of lock type and operation is most accurate for row-level locking?

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