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Ntt Data Europe & Latam Data Analyst Interview Questions

The questions to prepare for a Ntt Data Europe & Latam Data Analyst interview. Questions from real interview reports rank first. Updated daily.

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SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min

Explain SQL Join TypesEasy

Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.

JoinsData WranglingGroup By

Ntt Data Europe & Latam

Many-to-Many Relationship ModelingMedium

Tests data modeling skills for representing many-to-many relationships accurately.

many-to-oneData Modeling

Ntt Data Europe & Latam

SQL Joins and FunctionsEasy

Tests SQL proficiency for joining datasets and applying functions to transform data.

project experienceJoinsfunctions

Ntt Data Europe & Latam

SQL Joins and Use CasesEasy

Practice

Practice drill

Identify common SQL join types and explain when each is appropriate.

Joinsdatabase queryingjoin types

Ntt Data Europe & Latamddata consultancy

NTT DATA

Optimizing Slow SQL QueriesHard

Practice

Practice drill

Optimize a PostgreSQL revenue query by reducing scanned rows, preserving result correctness, and supporting joins with appropriate indexes.

Performance Tuningdatabase optimizationJoins

Ntt Data Europe & Latam

Exactly-Once Streaming GuaranteesMedium

Practice

Practice drill

Deduplicate streaming deliveries and calculate committed event totals without counting retries more than once.

data validationdata integritydata auditing

Ntt Data Europe & Latam

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Metrics4 questions · ~32 min

Investigating Sales DropsHard

Evaluates your approach to root-cause analysis using data to drive business decisions.

Ntt Data Europe & Latam

Consulting Case: Salary EstimationMedium

Evaluates your approach to structured estimation and reasoning under constraints.

Ntt Data Europe & Latam

Investigating a 15% DAU DropMedium

Tests structured troubleshooting and metric investigation using data analysis techniques.

root causeDiagnosis

Ntt Data Europe & Latam

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Behavioral & Leadership38 questions · ~304 min

Preparing for Multiple Interview FormatsEasy

Tests prioritization, ownership, and communication in preparing for a structured interview process with multiple formats.

backgroundpreparationmotivation

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