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Beranda / Subjek Wawancara / Data Engineer
WithoutBook LIVE Mock Interviews Data Engineer Related interview subjects: 12

Interview Questions and Answers

Know the top Data Engineer interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Total 30 questions Interview Questions and Answers

The Best LIVE Mock Interview - You should go through before interview

Know the top Data Engineer interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Interview Questions and Answers

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Freshers / Beginner level questions & answers

Ques 1

What is a schema in the context of databases?

A schema defines the structure of a database, including tables, fields, and relationships between tables.

Example:

In a relational database, a schema might include tables for 'users' and 'orders,' with defined fields for each.
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Ques 2

What is the difference between a left join and an inner join in SQL?

An inner join returns only the rows where there is a match in both tables, while a left join returns all rows from the left table and the matched rows from the right table.

Example:

Selecting all customers and their orders, even if some customers have not placed any orders (left join).
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