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Updated weekly · Last refresh Oct 17

EXL Service Philippines Data Visualisation Specialist Interview Questions

The questions to prepare for a EXL Service Philippines Data Visualisation Specialist interview. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 9 questions + 3 drills · ~102 min
Tableau Performance and SecurityHard

Assesses Tableau performance tuning, calculation design, data modeling choices, and secure access controls.

performance optimizationEXL Service Philippines
Regex in SQL ServerMedium

Evaluates your practical SQL Server skills for pattern-based data transformation.

EXL Service Philippines
SQL for Power BI PerformanceMedium

Tests your ability to write and apply SQL for effective Power BI reporting and performance.

sql queriessqlpower biEXL Service Philippines
Minimize Production Data Refresh TimeMedium

Tests optimization strategies for reliable, timely refreshes in production reporting.

performanceproduction environmentEXL Service Philippines
Optimize Slow Power BI DashboardsMedium

Tests performance tuning skills for Power BI datasets and report responsiveness.

performance optimizationdata handlingpower biEXL Service Philippines
Manage Slowly Changing DimensionsMedium

Tests dimensional modeling techniques for historical accuracy in analytics.

slowly changing dimensionsdata managementData ModelingEXL Service Philippines
Running Average for Last 5 DaysEasy
Practice
Recently asked
Practice drill

Calculate a calendar-aware five-day running average of daily sales using CTEs and window functions.

Window FunctionssqlEXL Service Philippines
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.

SubqueriesRankingSortingeClinicalWorksNNeenOpal CanadaInformatica
Optimize Complex Query for Compute EfficiencyHard
Practice
Practice drill

Optimize a complex SQL query to reduce compute credits in PostgreSQL.

Data WranglingAutodeskEXL Service Philippines
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2
More topics3 questions · ~24 min
Design for Real-Time KPI MonitoringMedium

Tests dashboard design decisions for executive monitoring and operational clarity.

dashboard designEXL Service Philippines
Handle Misleading Chart RequestsMedium

Tests stakeholder communication and ethical data storytelling under client pressure.

Stakeholder Managementclient communicationdata visualizationEXL Service Philippines
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