MongoDB
SENIOR

Fill sparse table

Test for Senior Data Engineer | SQL, MongoDB

Overall seniority level

Senior

Test duration

56 minutes

Evaluation

Automatic

Tested skills:

Test overview

Test is combined from various tasks. SQL task, Choice questions and Code gaps. All evaluated automatically.

Task types

Code gaps

Mongo | Query | Update records meeting the criteria code gap assessing knowledge of Mongo, MongoDB

Level: Hard

Tested skills: Mongo, MongoDB

SQL task

SQL | Fill sparse table - Write a query that will return the list of all users with the creation date and return the date from the previous not-null row for the entries affected with the bug.

Level: Hard

Tested skills: SQL

Code gaps

Mongo | Query | Return specified products code gap assessing knowledge of Mongo, MongoDB

Level: Hard

Tested skills: Mongo, MongoDB

Choice questions

6 choice questions assessing knowledge of MongoDB, NoSQL, SQL

Level: Hard

Tested skills: MongoDB, NoSQL, SQL

Automatic evaluation

We automatically score multi-choice tests and programming tasks and evaluate candidate code for logical correctness, time efficiency and code quality.

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