What database management systems have you worked with in your projects?
Junior — Middle
220
Python
10983
584
Can you name different types of databases you have worked with or are familiar with?
Junior — Middle
210
Share your professional experience and skills that you believe are relevant for this position.
Intern — Junior
198
What is the role of indexes in a database and how do they help speed up query execution?
Junior — Middle
185
What methods and tools have you used to optimize data storage in your previous company?
Junior — Middle
177
What measures have you taken to improve system efficiency?
Middle — Middle+
162
What advantages does ClickHouse offer that make it a preferred tool for analytical processing and aggregation queries?
Junior — Middle
158
How to distinguish a hash index from a B-Tree index in PostgreSQL and what are their key differences?
Junior — Middle
152
Can you give examples of main methods to improve performance in PostgreSQL?
Junior — Middle
152
What reasons make a B-Tree index more preferable in a database despite its slower speed compared to a hash index?
Junior — Middle
145
What are the main advantages of using columnar databases compared to row-based storage models?
Junior — Middle
145
Can you explain what an index is in a database management system and how it affects performance?
Junior — Middle
140
Do you have any questions for us regarding the role or the company?
137
What is the advantage of using columnar data storage models in terms of performance?
Junior — Middle
137
Describe a practical situation where you failed to achieve the desired result and what motivated your actions.
Junior — Middle
134
Can you list the main types of data storage methods in databases?
Junior — Middle
132
How does using indexes in a database help improve query performance?
126
Is it possible for an algorithm with quadratic time complexity to run faster than an algorithm with O(n log n) complexity?
Junior — Middle
124
Share examples of the most exciting technical problems you have encountered and successfully solved.
Junior — Middle
117
Have you worked with configuring and optimizing SQL queries in PostgreSQL to improve performance?
Junior — Middle
107