Dataford
Top 18
Prep plan
Updated weekly · Last refresh Aug 30

Systems Application & Technologies Data Analyst Interview Questions

The questions to prepare for a Systems Application & Technologies Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

18questions
~2htotal time
Track your progressSign up free to work through all 18 questions and resume where you left off.
Start practicing free →
1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualitySystems Application & Technologies
Choosing Correct SQL JoinsMedium

Tests your understanding of join semantics and your ability to prevent analysis errors caused by incorrect joins.

Joinsjoin typesSystems Application & Technologies
Merging Legacy Data SafelyHard

Tests your data quality and integrity practices when combining heterogeneous legacy sources.

data integrationlegacy systemsdata integritySystems Application & Technologies
Optimizing Slow SQL QueriesHard

Tests your SQL performance tuning approach on large-scale datasets and your ability to diagnose bottlenecks.

Performance Tuningsql querySystems Application & Technologies
SQL Join With Matching and Non-MatchingMedium
Practice
Practice drill

Use a FULL OUTER JOIN and CASE expression to identify matched and unmatched OneTrust QA test cases and executions.

JoinsData WranglingCase WhenHealth CatalystGoodwill Industries Of TulsaOneTrust
Resolve Conflicting Customer AttributesMedium
Practice
Practice drill

Use joins, CTEs, and row ranking to resolve conflicting customer profile values across ACME House systems.

JoinsData WranglingQualityRamsey SolutionsACME House
Reconcile Conflicting Invoice TotalsMedium
Practice
Practice drill

Reconcile billing and ERP invoice totals using joins, a CTE for latest snapshots, and CASE-based discrepancy classification.

JoinsData WranglingQualityLiterati
2
Behavioral & Leadership12 questions · ~96 min
Messy Data Under Decision PressureMedium

Tests ownership and judgment when working through ambiguous, low-quality data to produce credible recommendations.

Data QualityProblem SolvingOwnershipSystems Application & Technologies
Simplifying a Complex Technical TopicMedium

Tests whether you can translate technical complexity into clear, audience-appropriate documentation that drives understanding and action.

Influence Without AuthorityCommunicationOwnershipSystems Application & Technologies
More Behavioral & Leadership questions with a free account
3
More topics2 questions · ~16 min
Team vs Executive MetricsMedium

Separate operational metrics by decision horizon, audience, and actionability so teams and executives each see the right level of signal.

Metricsproject healthkpi hierarchySystems Application & Technologies
Root-Causing KPI DropsMedium

Tests your troubleshooting workflow for metrics and your ability to drive data-informed decisions.

root causeKPIDiagnosisSystems Application & Technologies

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
The finish line: interview-readyComplete all 18 questions plus 3 hands-on drills to finish this plan.