MongoDB
MIDDLE

Customer Data

Test for Middle Data Engineer | SQL, MongoDB

Overall seniority level

Middle

Test duration

51 minutes

Evaluation

Automatic

Test overview

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

Task types

SQL task

SQL | Customer Data - Find all the customers whose first and last names are not unique in this database, as well as the number of times each first and last name pair appears in the database.

Level: Medium

Tested skills: HSQLDB, MSSQL, MySQL, oracle, PostgreSQL, SQL

Code gaps

Mongo | Query | Update with the Lowest Value code gap assessing knowledge of Mongo, MongoDB

Level: Medium

Tested skills: Mongo, MongoDB

Code gaps

Mongo | Query | Number of Elements in Array code gap assessing knowledge of Mongo, MongoDB

Level: Medium

Tested skills: Mongo, MongoDB

Code gaps

Mongo | Query | Multiply Values code gap assessing knowledge of Mongo, MongoDB

Level: Medium

Tested skills: Mongo, MongoDB

Choice questions

5 choice questions assessing knowledge of MongoDB, NoSQL, SQL

Level: Medium

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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