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Updated weekly · Last refresh Aug 30

Yochana Data Engineer Interview Questions

The questions to prepare for a Yochana Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 3 questions · ~28 min
Anagram Check in PythonEasy
Practice
Recently asked

Determine whether two labels contain the same characters using a frequency map in linear time.

string manipulationpythonYochana
Python Anagram and KwargsMedium
Recently asked

Tests your ability to handle core coding and data modeling concepts together.

sqlpythonYochana
Python Kwargs UsageEasy
Recently asked

Assesses your practical Python knowledge for flexible function interfaces.

coding practicespythonYochana
2
Pipelines11 questions · ~102 min
Data Quality and Schema EvolutionMedium
Recently asked

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualityYochana
Medallion Architecture LayersMedium
Recently asked

Evaluates your understanding of layered data processing for quality, governance, and analytics.

medallion architectureYochana
End-to-End Pipeline and MigrationHard
Recently asked

Evaluates your ability to communicate a complete, production-style data engineering design end to end.

data ingestionYochana
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3
More topics3 questions · ~28 min
Window Function Query OptimizationMedium
Recently asked

Evaluates your ability to write and optimize analytic SQL with window functions.

Window Functionsquery optimizationsqlYochana
Surrogate Keys in SQLMedium
Recently asked

Assesses your understanding of surrogate keys for reliable joins and data modeling.

sqlData ModelingYochana
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Bookstore Schema PracticeEasy
Practice
Practice drill

Use a CTE, joins, and distinct aggregates to calculate Meta Logistics bookstore payment metrics.

sql queriessqlpythonMeta Logistics
Top Clinics by Patient VolumeMedium
Practice
Practice drill

Rank Oracle Health EHR clinics by distinct completed patients using aggregation and ROW_NUMBER().

Window Functionsquery optimizationsqlOOracle Health
SQL for Compliance ExtractionMedium
Practice
Practice drill

Use a LEFT JOIN, date filtering, COALESCE, and CASE to extract active ERM Digital compliance records with missing values handled.

missing valuessqldata extractionERM
The finish line: interview-readyComplete all 17 questions plus 3 hands-on drills to finish this plan.