Oracle Applied Scientist Interview Questions
The questions to prepare for a Oracle Applied Scientist interview. Questions from real interview reports rank first. Updated weekly.
Use a hash map to find two array elements that sum to a target in O(n) time.
OracleFind the longest substring with all unique characters using a sliding window.
OracleHow to validate a machine learning model and interpret whether its metrics are trustworthy.
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Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
OracleExplain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.
OracleTests system design for streaming ingestion, processing, and fault tolerance.
OracleTests statistical thinking for experimentation, metrics, and controlling confounding factors.
OracleTests data quality controls, validation, and reliability practices for large-scale data.
OracleFind the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
eClinicalWorks
Informatica
Spectraforce TechnologiesFind the top 3 highest-paid employees in each department using window functions.
Brillio
Aubay Spain
Sabre SystemsUse a CTE, joins, CASE logic, and aggregation to clean Motive event logs into a user-day product activity table.
Motive