Welcome to DataPathsala
Built by a Data Engineer, for Data Engineers ❤️
Start Practicing
SQL / Pandas
Practice queries and data manipulation
PySpark
Scale your data processing skills
DSA Challenges
Solve algorithmic problems in Python & Java
Data Modeling
Design data models and ER diagrams
Interview Questions
Topic-wise interview questions & notes
System Design
Data engineering system design rounds
Data engineering practice that you can actually run
DataPathsala brings SQL, Pandas, PySpark, DSA, data modelling, and data-system design into one focused learning platform. Problems include concrete datasets, expected results, and executable test cases so you can examine an approach instead of memorising an answer.
The material is organised around skills used by data engineers: querying and transforming data, reasoning about scale, designing reliable schemas, and explaining technical choices in interviews. Topic roadmaps and study plans help turn individual exercises into a repeatable learning path.
Created and reviewed by a data engineer
DataPathsala is independently built by Manish Kumar. Questions and test cases are reviewed before publication, and learner reports are used to correct unclear wording, invalid data, and execution issues.
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