Education platform for interview prep, online tests, tutorials, and live practice

Build skills with focused learning paths, mock tests, and interview-ready content.

WithoutBook brings subject-wise interview questions, online practice tests, tutorials, and comparison guides into one responsive learning workspace.

Search the library

Prepare Interview

Ask Question

Mock Exams

Make Homepage

Bookmark this page

Data Engineer Interview Questions and Answers

Question: What is the difference between a star schema and a snowflake schema in data modeling?

Answer: A star schema has a central fact table connected to dimension tables, while a snowflake schema extends the star schema by normalizing dimension tables.

Example:

In a star schema, a sales fact table is linked to dimension tables like 'time' and 'product.' In a snowflake schema, the 'time' dimension may be further normalized into 'year,' 'quarter,' and 'month' tables.

Save For Revision

Bookmark this item, mark it difficult, or place it in a revision set.

Open My Learning Library

Is it helpful? Yes No

Most helpful rated by users: