SQL Advanced Assessment

Online assessment to evaluate advanced-level SQL development and database design expertise

Crafted for experienced professionals, this advanced-level assessment challenges candidates to demonstrate deep proficiency in SQL programming, database design, and query optimization. It covers advanced topics such as indexing strategies, ACID properties, normalization (up to 3NF), transaction isolation levels, and stored procedures. Candidates are also tested on performance tuning, complex joins, and schema design best practices through real-world, hands-on scenarios. The assessment highlights problem-solving ability, attention to database integrity, and a strong grasp of relational theory. Ideal for senior data engineers, DBAs, and backend developers, this test helps employers identify experts capable of architecting efficient, scalable, and secure data systems.

Sample Question

Given a Products table with columns defined as: CREATE TABLE Products ( product_id int primary key, product_name nvarchar(max), category_id int, price decimal(10, 2), ); Write a SQL statement to create a non-clustered index on category_id to improve filtering performance.