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Top 50 acid properties Interview Questions

The most frequently asked acid properties questions across all roles and companies, ranked by real interview frequency. Updated daily.

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~7htotal time
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1
SQL & Data ManipulationStart here. 41 questions + 3 drills · ~358 min
Explain ACID in Transaction SystemsEasy
Recently asked

Explain the four ACID properties and why they matter for reliable transaction processing in SQL systems.

acid propertiestransactionsdata integrityLLuxoft SingaporeDDelivery Hero IndiaPocket Fm
Explain ACID for Card TransactionsEasy
Recently asked

Explain ACID properties and why they protect financial transaction data in card and payments systems.

acid propertiesfinancial datadata integrityIon GroupSStandard Chartered BankElevate Credit Service
PostgreSQL Isolation Levels for PaymentsMedium
Recently asked

Explain PostgreSQL isolation levels and how they prevent dirty reads, non-repeatable reads, and phantom reads in payment workflows.

acid propertiestransactionsdata integrityRevolut
ACID Transactions in CXone DataEasy

Explain ACID properties and how they protect transactional data integrity in a PostgreSQL system.

acid propertiestransactionsdata integrityNiCE
Maintain Data Integrity in TransactionsMedium

Tests your ability to write safe, correct SQL transactions with integrity guarantees.

acid propertiestransactionsdata integrityPublix
Explain ACID PropertiesMedium

Tests your understanding of transaction guarantees and how they affect database correctness.

acid propertiesdatabase conceptsCelebal TechnologiesHHCLTech Mexico
ACID and AtomicityMedium

Tests understanding of transactional guarantees and atomicity in databases.

acid propertiesIntuit Management ConsultancyIntuit
DBMS and ACID FundamentalsMedium

Evaluates your understanding of database fundamentals and core OOP concepts.

acid propertiesJoinsnormalizationCvent
SQL Duplicate Record CleanupMedium
Practice
Recently asked
Practice drill

Identify duplicate transaction rows, retain the earliest record, and delete later duplicates safely.

deduplicationdata cleaningtransactionsOracleDiscoverMicrosoft
SQL for Duplicate Customer RemovalHard
Practice
Recently asked
Practice drill

Identify duplicate customer records, reassign their transactions, and remove the redundant records while preserving the canonical customer.

deduplicationdata cleaningData ManipulationThomson Reuters
Mitigate Data Skew in JoinsHard
Practice
Recently asked
Practice drill

Detect a heavily skewed join key and produce a deterministically salted join result for more balanced large-scale processing.

database optimizationlarge datasetsJoinsDatabricks
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2
Technical Fundamentals6 questions · ~48 min
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3
Pipelines3 questions · ~24 min
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