Real questions from top companies · hard
Create Spark Session, read CSV, join, and write as table. Provide example code.
Data Warehouse Design from scratch
Describe a challenging project where you optimized a complex ETL process.
Describe a recent project where you used AWS services extensively. What was your role, and what challenges did you face?
Describe a scenario where you used Databricks for real-time data processing.
Describe a situation where you had to redesign a data model to meet changing business needs
Describe how metadata is stored and accessed for internal tables in a relational database.
Design a Custom API that can query a backend server and return customer data such as the number of orders placed by a user based on their user ID
Design a daily ETL pipeline to ingest API data into BigQuery.
Design a financial database system focusing on database models, schema design, partition keys, and query optimization techniques.
Design a relational data model for a sales database, incorporating normalization techniques
Design a structure (data model) that allows efficient querying of movies based on multiple search criteria (title, genre, actor, director).
Design the data model for an ETL pipeline that ingests data from a database and loads it into Snowflake
Designing backend architecture for SQL Warehouse?
Designing scalable data models - explain approach
Difference Between Truncate/Delete and Union/Union All – Performance and Usage
Discuss a project where you balanced business goals with technical constraints.
Discuss a project where you significantly impacted performance or cost optimization.
Discuss a project where you significantly improved the performance of a data pipeline.
Does BigQuery support indexes? If not, why?
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