NoSQL Online Test

Q: What are the main Database tests?

Some important database tests include: MongoDB Test Oracle DBMS Test PostgreSQL Test Redis Test

The NoSQL Online Test uses scenario-based MCQs to evaluate candidates on their knowledge of NoSQL databases, including their understanding of data modeling, database design, indexing, querying, and data consistency in NoSQL databases. The test aims to evaluate a candidate's ability to design and develop applications that utilize NoSQL databases efficiently and effectively.

Covered skills:

Column-Store system
Document-Store Id store system
Key-value solutions
Column-Store solutions
Document Store IT Solutions
Graph-Based Solutions
Key-value store solutions

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About the NoSQL Test

The NoSQL Online 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:

Ability to design and implement column-store systems
Experience in developing document-store ID store systems
Understanding of key-value solutions and their implementation
Proficiency in column-store solutions for efficient data storage
Knowledge in document store IT solutions for seamless document management
Familiarity with graph-based solutions for effective data representation
Expertise in key-value store solutions for quick data retrieval

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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

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Why you should use Pre-employment NoSQL Online Test?

The NoSQL Assessment 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:

Designing and implementing Column-Store system
Document-Store Id store system implementation
Creating Key-value solutions
Optimizing Column-Store solutions
Developing Document Store IT Solutions
Implementing Graph-Based Solutions
Building Key-value store solutions
Managing data in Column-Store system
Implementing Document-Store Id store system
Troubleshooting Key-value solutions

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 NoSQL Online Test?

Column-Store system: The Column-Store system is a database management system that stores data in columns instead of rows. This structure allows for faster data retrieval and analysis, especially for large datasets, as it only reads the columns needed, minimizing disk I/O and improving query performance.

Document-Store Id store system: A Document-Store Id store system is a database management system that stores and retrieves data in a document-oriented format, where each document is identified by a unique document identifier (ID). This allows for flexible and scalable data storage, as data is stored in a schema-less manner, accommodating varying data structures and types within each document.

Key-value solutions: Key-value solutions are data storage and retrieval systems that use a simple key-value pair structure, where each piece of data is associated with a unique key. This approach enables rapid data access and retrieval, making it ideal for caching, session management, and other scenarios where quick look-up operations are required.

Graph-Based Solutions: Graph-based solutions are database management systems that use graph structures to represent and store data. Graphs consist of nodes (representing entities or objects) and edges (representing relationships between nodes). This approach enables efficient querying and analysis of complex relationships and interconnected data, making it suitable for social networks, recommendations, and network analysis.

Column-Store solutions: Column-Store solutions are database management systems that store data in a columnar format, rather than the traditional row format. This organization allows for higher compression rates and improved query performance, as only the necessary columns are read during query execution. Column-Store solutions are particularly beneficial for data analytics and reporting, where aggregated queries over large datasets are common.

Document Store IT Solutions: Document Store IT Solutions are database management systems that focus on storing and retrieving data in a flexible and self-describing format, such as JSON or XML. This allows for the storage of semi-structured and structured data, facilitating dynamic schema evolution and supporting rapid development and iteration cycles.

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 NoSQL Assessment Test to be based on.

Column-store design

Indexing in column stores

Query optimization in column stores

Document-store ID retrieval

Document-store data modeling

Key-value storage architecture

Key-value data retrieval methods

Writing efficient code with column stores

Designing schema for document stores

Graph-based data structure

Graph traversal algorithms

Graph database integration

Using key-value stores for caching

Document-oriented database systems

Columnar storage compression techniques

Document-store indexing methods

Key-value store consistency models

Querying in graph-based solutions

Normalization in document stores

Partitioning in column stores

Aggregation in column stores

Sharding in key-value stores

Concurrent operations in document stores

Load balancing in graph-based solutions

Distributed key-value stores

Data replication in column stores

Access control in document stores

Backup and recovery in key-value stores

Schema evolution in graph-based solutions

Data migration in document stores

Data consistency in column stores

Eventual consistency in key-value stores

Scalability of graph-based solutions

Database locking in document stores

Optimistic concurrency control in key-value stores

Transaction management in column stores

Embedded document models in document stores

Cap theorem and column stores

Horizontal partitioning in key-value stores

Traversal algorithms in graph-based solutions

Capacity planning for document stores

Denormalization in column stores

Key-value store durability and fault tolerance

Graph-based queries optimization

Database locking in graph-based solutions

Secondary indexes in document stores

Data distribution in key-value stores

Backup and replication strategies in column stores

Concurrency control in graph-based solutions

Data modeling in document stores

Performance optimization in key-value stores

Data consistency in graph-based solutions

Query planning and execution in document stores

Column-store compression algorithms

Key-value store benchmarks

Graph visualization and analysis

Document-store query languages

Data migration in key-value stores

Graph database query languages

Column-store partitioning strategies

Distributed document stores

Key-value store consistency models

Fault tolerance in graph-based solutions

Schema design in document stores

Consistency models in column stores

Distributed key-value store replication

Security in graph-based solutions

Sharding strategies for key-value stores

Data replication in document stores

Aggregation functions in column stores

Concurrency control in key-value stores

What roles can I use the NoSQL Online Test for?

NoSQL DataBase Engineer
Hadoop and NoSQL Operations Engineer
NoSQL Database Administrator
NoSQL Platform Engineer

How is the NoSQL Online 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

Optimizing performance of Column-Store solutions
Developing scalable and efficient Document Store IT Solutions
Designing and modeling Graph-Based Solutions
Implementing distributed Key-value store solutions
Analyzing and optimizing data in Column-Store system
Implementing replication for Document-Store Id store system
Applying indexing strategies for Key-value solutions
Designing and implementing distributed Column-Store solutions
Building secure Document Store IT Solutions
Implementing traversal algorithms for Graph-Based Solutions

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Have questions about the NoSQL Hiring Test?

What is NoSQL Assessment Test?

The NoSQL Assessment Test is designed to evaluate the candidate's skills and knowledge in various NoSQL databases. This test is commonly used by recruiters and companies to assess technical qualifications for roles requiring expertise in NoSQL solutions.

Can I combine the NoSQL Assessment Test with Document Store IT questions?

Yes, recruiters can request a single custom test with multiple skills, including Document Store IT Solutions. For more details on how we assess Document Store IT Solutions, check out the Document Store IT Solutions Test.

What topics are covered in the NoSQL Assessment Test?

The NoSQL Assessment Test covers a range of topics including Column-Store systems, Document-Store systems, Key-value solutions, Graph-Based Solutions, and skills required for senior roles such as optimizing Column-Store performance and implementing distributed Key-value store solutions.

How to use NoSQL Assessment Test in my hiring process?

Use the NoSQL Assessment Test as a pre-screening tool at the beginning of your recruiting process. Add the test link to your job post or directly invite candidates via email.

What are the main Database tests?

Some important database tests include:

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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Along with scorecards that report the performance of the candidate in detail, you also receive a comparative analysis against the company average and industry standards.

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