Downloadable PDF guides, cheat sheets, and practice sets to complement your interview preparation.
Window functions, CTEs, joins, aggregation patterns - all in one printable reference.
RDDs, DataFrames, Delta Lake, performance tuning, and data skew solutions.
10 battle-tested pipeline architecture templates with diagrams and trade-off analysis.
PySpark, pandas, ETL patterns, decorators, and common coding interview patterns.
AWS vs GCP vs Azure for data engineering. Services, pricing, and when to use what.
All guides combined into one comprehensive study package with practice questions.
Real interview SQL queries with solutions and explanations.
PySpark exercises from junior to expert level.
End-to-end pipeline design problems with detailed solutions.
ETL scripts, data manipulation, and coding patterns.
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