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Tata Consultancy Services (North America) Data Analyst Interview Questions

The questions to prepare for a Tata Consultancy Services (North America) Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 8 questions + 3 drills · ~94 min
Cleaning Nulls and Duplicate RecordsEasy
Recently asked

Explain how to clean nulls, remove duplicates, and standardize inconsistent values during SQL transformations.

Data WranglingCase WhenAggregationsTata Consultancy Services (North America)
Validating Migrated Data AccuracyMedium
Recently asked

Tests your approach to ensuring data quality and correctness during report migrations.

data accuracyvalidationTata Consultancy Services (North America)
Stored Procedures vs ViewsMedium
Recently asked

Tests your understanding of database objects and how to apply them during migrations.

stored proceduressqlTata Consultancy Services (North America)
Optimizing Poorly Performing SQLHard
Recently asked

Tests advanced SQL tuning and performance diagnosis for large-scale workloads.

performancequery optimizationsqlTata Consultancy Services (North America)
Data Structures and JoinsMedium

Tests your ability to connect data modeling concepts with SQL joins and Python data structures.

Data StructuressqlpythonTata Consultancy Services (North America)
Sorting Algorithms in PracticeMedium

Evaluates your understanding of core algorithmic tradeoffs and complexity.

CodingTata Consultancy Services (North America)
Running Total SQLEasy
Practice
Practice drill

Aggregate TCS BaNCS sales by month, then calculate a chronological running total with a window function.

Window FunctionsData WranglingAggregationsCotalityTata Consultancy Services (North America)
Top Customers by Sales RevenueEasy
Practice
Recently asked
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
Second Highest Trader SalaryEasy
Practice
Recently asked
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
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2
Behavioral & Leadership11 questions · ~88 min
Prioritizing Competing Report RequestsMedium
Recently asked

Tests prioritization under pressure, stakeholder management, and ownership when multiple reporting requests compete for limited analytics capacity.

Stakeholder Managementtime managementPrioritizationTata Consultancy Services (North America)
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3
More topics1 question · ~8 min
Choosing VisualizationsMedium
Recently asked

Tests your ability to translate business questions into effective, accurate visuals.

business problemdata visualizationTata Consultancy Services (North America)

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The finish line: interview-readyComplete all 20 questions plus 3 hands-on drills to finish this plan.