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MariaDB Test

The MariaDB Test evaluates a candidate's proficiency in MariaDB database management and SQL querying. It covers key areas such as database architecture, query optimization, data modeling, and administration tasks. Through MCQs and hands-on coding questions, it assesses the ability to write efficient SQL queries, manage database performance, and implement security measures in MariaDB environments.

Covered skills:

  • MariaDB Architecture
  • SQL Query Optimization
  • Data Types and Indexing
  • Stored Procedures and Functions
  • Triggers and Events
  • Replication and Clustering
  • Backup and Recovery
  • Security and Access Control
  • Performance Tuning
  • Transactions and ACID Properties
  • MariaDB Storage Engines
  • SQL Joins and Subqueries
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About the MariaDB Assessment Test


The MariaDB Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Demonstrate proficiency in optimizing SQL queries for improved performance and efficiency in MariaDB environments.
  • Exhibit a deep understanding of MariaDB architecture and its components to design robust database systems.
  • Skillfully implement and manage various data types and indexing strategies to enhance database performance.
  • Develop and maintain complex stored procedures and functions to streamline database operations.
  • Effectively utilize triggers and events for automating database tasks and maintaining data integrity.
  • Configure and manage replication and clustering solutions to ensure high availability and scalability.
  • Implement comprehensive backup and recovery strategies to safeguard critical data and minimize downtime.
  • Apply best practices in security and access control to protect sensitive information in MariaDB databases.
  • Conduct performance tuning and optimization to enhance overall database system efficiency.
  • Demonstrate expertise in managing transactions and ensuring ACID properties for data consistency.
  • Utilize appropriate MariaDB storage engines based on specific use cases and performance requirements.
  • Craft complex SQL queries using joins and subqueries to extract and manipulate data effectively.

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Non-googleable questions


We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 15,000+ questions. The actual questions on this MariaDB Test will be non-googleable.

🧐 Question

Medium

Multi Select
JOIN
GROUP BY
Sql Join
Data Analysis
Solve
Consider the following SQL table:
 image
How many rows does the following SQL query return?
 image

Medium

nth highest sales
Nested queries
User Defined Functions
Solve
Consider the following SQL table:
 image
Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
 image

Medium

Select & IN
Nested queries
Solve
Consider the following SQL table:
 image
Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
 image

Medium

Sorting Ubers
Nested queries
Join
Comparison operators
Solve
Consider the following SQL table:
 image
What will be the first two tuples resulting from the following SQL command?
 image

Hard

With, AVG & SUM
MAX() MIN()
Aggregate functions
Solve
Consider the following SQL table:
 image
How many tuples does the following query return?
 image
🧐 Question🔧 Skill

Medium

Multi Select
JOIN
GROUP BY
Sql Join
Data Analysis

2 mins

SQL
Solve

Medium

nth highest sales
Nested queries
User Defined Functions

3 mins

SQL
Solve

Medium

Select & IN
Nested queries

3 mins

SQL
Solve

Medium

Sorting Ubers
Nested queries
Join
Comparison operators

3 mins

SQL
Solve

Hard

With, AVG & SUM
MAX() MIN()
Aggregate functions

2 mins

SQL
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Multi Select
JOIN
GROUP BY
Sql Join
Data Analysis
SQL
Medium2 mins
Solve
nth highest sales
Nested queries
User Defined Functions
SQL
Medium3 mins
Solve
Select & IN
Nested queries
SQL
Medium3 mins
Solve
Sorting Ubers
Nested queries
Join
Comparison operators
SQL
Medium3 mins
Solve
With, AVG & SUM
MAX() MIN()
Aggregate functions
SQL
Hard2 mins
Solve
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Why you should use Pre-employment MariaDB Test?

The MariaDB Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Understanding MariaDB architecture and components
  • Writing and optimizing complex SQL queries
  • Implementing appropriate data types and indexing strategies
  • Creating and managing stored procedures and functions
  • Designing and implementing triggers and events
  • Configuring basic replication and clustering setups
  • Performing backup and recovery operations
  • Implementing security measures and access control
  • Tuning database performance for basic workloads
  • Managing transactions and ensuring ACID properties

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the MariaDB Test?

MariaDB Architecture: Understands the structure and components of MariaDB, including its server, storage engines, and client utilities. Knowledge of architecture is essential for effective deployment and maintenance.

SQL Query Optimization: Involves writing efficient SQL queries to minimize latency and resource consumption. Optimized queries are crucial for performance tuning and ensuring the database handles large datasets effectively.

Data Types and Indexing: Knowledge of various data types and indexing methods to improve query performance and storage efficiency. Proper use of data types and indexes can significantly affect the speed and performance of database operations.

Stored Procedures and Functions: Utilizes stored procedures and functions for encapsulating repeated SQL code and logic within the database. This promotes code reuse and enhances security by reducing SQL injection risks.

Triggers and Events: Manages actions that automatically run in response to certain table modifications or scheduled intervals. Triggers and events are essential for automating database management tasks and maintaining data integrity.

Replication and Clustering: Involves configuring and maintaining multiple database instances for high availability and load balancing. Replication and clustering provide redundancy and improve database reliability.

Backup and Recovery: Focuses on creating backup strategies for data protection and defining recovery processes for data restoration. Essential for preventing data loss and ensuring business continuity.

Security and Access Control: Ensures that proper authentication and authorization mechanisms are in place to protect the database from unauthorized access. Crucial for safeguarding sensitive data and complying with regulatory requirements.

Performance Tuning: Encompasses techniques and best practices for optimizing the database's performance. Essential for maintaining efficiency, especially in high-load environments.

Transactions and ACID Properties: Involves managing database transactions to ensure data consistency, isolation, and durability. Transactions adhering to ACID properties are vital for data reliability and integrity.

MariaDB Storage Engines: Understanding different storage engines (e.g., InnoDB, MyISAM) and their use cases. Storage engines impact how data is stored, managed, and retrieved in the database.

SQL Joins and Subqueries: Employs complex SQL techniques to gather and manipulate data across multiple tables. Joins and subqueries enable comprehensive data analysis and reporting, increasing query flexibility and functionality.

Full list of covered topics

The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for MariaDB Test to be based on.

Query Optimization
Execution Plans
Index Strategies
Query Caching
MariaDB Architecture
InnoDB
MyISAM
Data Types
Indexing Techniques
Composite Indexes
Full-Text Indexes
Stored Procedures
User-Defined Functions
Triggers
Events
Replication Setup
Master-Slave
Galera Cluster
Backup Strategies
Point-in-Time Recovery
Access Control
SSL Connections
Performance Monitoring
Query Profiling
ACID Properties
Transaction Isolation
Storage Engines
TokuDB
ColumnStore
INNER JOIN
LEFT JOIN
Subquery Optimization
Correlated Subqueries
MariaDB Connectors
Database Partitioning
Sharding
JSON Support
Window Functions
Common Table Expressions
Virtual Columns
Sequence Engine
Spider Storage Engine
Query Parallelization
Aggregate Functions
Analytic Functions
Data Compression
Row-Level Locking
Table Maintenance
Query Cache
Explain Analyze

What roles can I use the MariaDB Test for?

  • Database Administrator
  • Database Developer
  • Data Analyst
  • Backend Developer
  • Full Stack Developer
  • System Administrator
  • DevOps Engineer
  • Data Engineer
  • Software Engineer
  • Cloud Database Engineer

How is the MariaDB Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Comparing and selecting appropriate MariaDB storage engines
  • Writing advanced SQL joins and subqueries
  • Designing and implementing high-availability solutions
  • Optimizing query execution plans and indexing strategies
  • Developing complex stored procedures with cursors and error handling
  • Implementing advanced replication topologies
  • Designing backup and recovery strategies for large databases
  • Implementing fine-grained access control and auditing
  • Tuning MariaDB server parameters for optimal performance
  • Designing and implementing partitioning schemes

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Multiple Question Sets

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Have questions about the MariaDB Hiring Test?

What is the MariaDB Test?

The MariaDB Test assesses a candidate's knowledge and skills in MariaDB, a popular open-source relational database. Recruiters use this test to evaluate technical proficiency in MariaDB for database-related roles.

Can I combine the MariaDB Test with SQL questions?

Yes, recruiters can request a custom test that includes both MariaDB and SQL questions. For more information on assessing SQL skills, refer to our SQL Online Test.

What topics are evaluated in the MariaDB Test?

The test covers MariaDB Architecture, SQL Query Optimization, Data Types and Indexing, Stored Procedures and Functions, Triggers and Events, Replication and Clustering, Backup and Recovery, Security and Access Control, Performance Tuning, Transactions and ACID Properties, MariaDB Storage Engines, SQL Joins and Subqueries.

How to use the MariaDB Test in my hiring process?

Use our assessment platform as an early-stage pre-screening tool. Add a link to the test in your job posting or send invitations via email. This helps identify skilled candidates quickly.

Can I test MariaDB and MySQL together in a single test?

Yes, you can test both MariaDB and MySQL together. This combination helps evaluate a candidate's broader database management skills. Check out our MariaDB and MySQL Online Test.

What are the main Database tests?
Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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